diff --git a/src/Ryujinx.Graphics.Nvdec/H264Decoder.cs b/src/Ryujinx.Graphics.Nvdec/H264Decoder.cs
index ecc7dbc792..c99d4a1766 100644
--- a/src/Ryujinx.Graphics.Nvdec/H264Decoder.cs
+++ b/src/Ryujinx.Graphics.Nvdec/H264Decoder.cs
@@ -17,12 +17,12 @@ namespace Ryujinx.Graphics.Nvdec
 
             ReadOnlySpan<byte> bitstream = rm.Gmm.DeviceGetSpan(state.SetInBufBaseOffset, (int)pictureInfo.BitstreamSize);
 
-            int width  = (int)pictureInfo.PicWidthInMbs * MbSizeInPixels;
+            int width = (int)pictureInfo.PicWidthInMbs * MbSizeInPixels;
             int height = (int)pictureInfo.PicHeightInMbs * MbSizeInPixels;
 
             int surfaceIndex = (int)pictureInfo.OutputSurfaceIndex;
 
-            uint lumaOffset   = state.SetPictureLumaOffset[surfaceIndex];
+            uint lumaOffset = state.SetPictureLumaOffset[surfaceIndex];
             uint chromaOffset = state.SetPictureChromaOffset[surfaceIndex];
 
             Decoder decoder = context.GetH264Decoder();
@@ -36,7 +36,7 @@ namespace Ryujinx.Graphics.Nvdec
                     SurfaceWriter.Write(
                         rm.Gmm,
                         outputSurface,
-                        lumaOffset   + pictureInfo.LumaFrameOffset,
+                        lumaOffset + pictureInfo.LumaFrameOffset,
                         chromaOffset + pictureInfo.ChromaFrameOffset);
                 }
                 else
@@ -44,9 +44,9 @@ namespace Ryujinx.Graphics.Nvdec
                     SurfaceWriter.WriteInterlaced(
                         rm.Gmm,
                         outputSurface,
-                        lumaOffset   + pictureInfo.LumaTopFieldOffset,
+                        lumaOffset + pictureInfo.LumaTopFieldOffset,
                         chromaOffset + pictureInfo.ChromaTopFieldOffset,
-                        lumaOffset   + pictureInfo.LumaBottomFieldOffset,
+                        lumaOffset + pictureInfo.LumaBottomFieldOffset,
                         chromaOffset + pictureInfo.ChromaBottomFieldOffset);
                 }
             }
diff --git a/src/Ryujinx.Graphics.Nvdec/Image/SurfaceReader.cs b/src/Ryujinx.Graphics.Nvdec/Image/SurfaceReader.cs
index 039a25832b..598b719921 100644
--- a/src/Ryujinx.Graphics.Nvdec/Image/SurfaceReader.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Image/SurfaceReader.cs
@@ -43,7 +43,7 @@ namespace Ryujinx.Graphics.Nvdec.Image
             int width,
             int height)
         {
-            OffsetCalculator calc = new OffsetCalculator(width, height, 0, false, 2, 2);
+            OffsetCalculator calc = new(width, height, 0, false, 2, 2);
 
             if (Sse2.IsSupported)
             {
diff --git a/src/Ryujinx.Graphics.Nvdec/Image/SurfaceWriter.cs b/src/Ryujinx.Graphics.Nvdec/Image/SurfaceWriter.cs
index cc5c251bec..dd67252afc 100644
--- a/src/Ryujinx.Graphics.Nvdec/Image/SurfaceWriter.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Image/SurfaceWriter.cs
@@ -60,7 +60,7 @@ namespace Ryujinx.Graphics.Nvdec.Image
 
             WriteLuma(
                 lumaBottom.Memory.Span,
-                surface.YPlane.AsSpan().Slice(surface.Stride),
+                surface.YPlane.AsSpan()[surface.Stride..],
                 surface.Stride * 2,
                 surface.Width,
                 surface.Height / 2);
@@ -80,8 +80,8 @@ namespace Ryujinx.Graphics.Nvdec.Image
 
             WriteChroma(
                 chromaBottom.Memory.Span,
-                surface.UPlane.AsSpan().Slice(surface.UvStride),
-                surface.VPlane.AsSpan().Slice(surface.UvStride),
+                surface.UPlane.AsSpan()[surface.UvStride..],
+                surface.VPlane.AsSpan()[surface.UvStride..],
                 surface.UvStride * 2,
                 surface.UvWidth,
                 surface.UvHeight / 2);
@@ -100,7 +100,7 @@ namespace Ryujinx.Graphics.Nvdec.Image
             int width,
             int height)
         {
-            OffsetCalculator calc = new OffsetCalculator(width, height, 0, false, 2, 2);
+            OffsetCalculator calc = new(width, height, 0, false, 2, 2);
 
             if (Sse2.IsSupported)
             {
diff --git a/src/Ryujinx.Graphics.Nvdec/NvdecDecoderContext.cs b/src/Ryujinx.Graphics.Nvdec/NvdecDecoderContext.cs
index 54934bc5ac..aaa734a88a 100644
--- a/src/Ryujinx.Graphics.Nvdec/NvdecDecoderContext.cs
+++ b/src/Ryujinx.Graphics.Nvdec/NvdecDecoderContext.cs
@@ -26,4 +26,4 @@ namespace Ryujinx.Graphics.Nvdec
             _vp8Decoder = null;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/Ryujinx.Graphics.Nvdec/NvdecDevice.cs b/src/Ryujinx.Graphics.Nvdec/NvdecDevice.cs
index ef8185f4d9..4ab7886d00 100644
--- a/src/Ryujinx.Graphics.Nvdec/NvdecDevice.cs
+++ b/src/Ryujinx.Graphics.Nvdec/NvdecDevice.cs
@@ -14,7 +14,7 @@ namespace Ryujinx.Graphics.Nvdec
         private readonly DeviceState<NvdecRegisters> _state;
 
         private long _currentId;
-        private ConcurrentDictionary<long, NvdecDecoderContext> _contexts;
+        private readonly ConcurrentDictionary<long, NvdecDecoderContext> _contexts;
         private NvdecDecoderContext _currentContext;
 
         public NvdecDevice(MemoryManager gmm)
diff --git a/src/Ryujinx.Graphics.Nvdec/NvdecRegisters.cs b/src/Ryujinx.Graphics.Nvdec/NvdecRegisters.cs
index cf8677838e..5effcb4984 100644
--- a/src/Ryujinx.Graphics.Nvdec/NvdecRegisters.cs
+++ b/src/Ryujinx.Graphics.Nvdec/NvdecRegisters.cs
@@ -4,7 +4,7 @@ namespace Ryujinx.Graphics.Nvdec
 {
     struct NvdecRegisters
     {
-#pragma warning disable CS0649
+#pragma warning disable CS0649 // Field is never assigned to
         public Array64<uint> Reserved0;
         public uint Nop;
         public Array63<uint> Reserved104;
diff --git a/src/Ryujinx.Graphics.Nvdec/NvdecStatus.cs b/src/Ryujinx.Graphics.Nvdec/NvdecStatus.cs
index 0712af88b8..1d6b4a60d5 100644
--- a/src/Ryujinx.Graphics.Nvdec/NvdecStatus.cs
+++ b/src/Ryujinx.Graphics.Nvdec/NvdecStatus.cs
@@ -4,7 +4,7 @@ namespace Ryujinx.Graphics.Nvdec
 {
     struct NvdecStatus
     {
-#pragma warning disable CS0649
+#pragma warning disable CS0649 // Field is never assigned to
         public uint MbsCorrectlyDecoded;
         public uint MbsInError;
         public uint Reserved;
@@ -13,4 +13,4 @@ namespace Ryujinx.Graphics.Nvdec
         public uint SliceHeaderErrorCode;
 #pragma warning restore CS0649
     }
-}
\ No newline at end of file
+}
diff --git a/src/Ryujinx.Graphics.Nvdec/Types/H264/PictureInfo.cs b/src/Ryujinx.Graphics.Nvdec/Types/H264/PictureInfo.cs
index 7c779dff3d..c0e0a463d5 100644
--- a/src/Ryujinx.Graphics.Nvdec/Types/H264/PictureInfo.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Types/H264/PictureInfo.cs
@@ -5,8 +5,9 @@ namespace Ryujinx.Graphics.Nvdec.Types.H264
 {
     struct PictureInfo
     {
-#pragma warning disable CS0169, CS0649
+#pragma warning disable IDE0051, CS0169, CS0649 // Remove unused private member
         Array18<uint> Unknown0;
+#pragma warning restore IDE0051
         public uint BitstreamSize;
         public uint NumSlices;
         public uint Unknown50;
@@ -50,24 +51,24 @@ namespace Ryujinx.Graphics.Nvdec.Types.H264
         public Array10<uint> Unknown2D4;
 #pragma warning restore CS0169, CS0649
 
-        public bool MbAdaptiveFrameFieldFlag => (Flags & (1 << 0)) != 0;
-        public bool Direct8x8InferenceFlag => (Flags & (1 << 1)) != 0;
-        public bool WeightedPredFlag => (Flags & (1 << 2)) != 0;
-        public bool ConstrainedIntraPredFlag => (Flags & (1 << 3)) != 0;
-        public bool IsReference => (Flags & (1 << 4)) != 0;
-        public bool FieldPicFlag => (Flags & (1 << 5)) != 0;
-        public bool BottomFieldFlag => (Flags & (1 << 6)) != 0;
-        public uint Log2MaxFrameNumMinus4 => (uint)(Flags >> 8) & 0xf;
-        public ushort ChromaFormatIdc => (ushort)((Flags >> 12) & 3);
-        public uint PicOrderCntType => (uint)(Flags >> 14) & 3;
-        public int PicInitQpMinus26 => ExtractSx(Flags, 16, 6);
-        public int ChromaQpIndexOffset => ExtractSx(Flags, 22, 5);
-        public int SecondChromaQpIndexOffset => ExtractSx(Flags, 27, 5);
-        public uint WeightedBipredIdc => (uint)(Flags >> 32) & 3;
-        public uint OutputSurfaceIndex => (uint)(Flags >> 34) & 0x7f;
-        public uint ColIndex => (uint)(Flags >> 41) & 0x1f;
-        public ushort FrameNum => (ushort)(Flags >> 46);
-        public bool QpprimeYZeroTransformBypassFlag => (Flags2 & (1 << 1)) != 0;
+        public readonly bool MbAdaptiveFrameFieldFlag => (Flags & (1 << 0)) != 0;
+        public readonly bool Direct8x8InferenceFlag => (Flags & (1 << 1)) != 0;
+        public readonly bool WeightedPredFlag => (Flags & (1 << 2)) != 0;
+        public readonly bool ConstrainedIntraPredFlag => (Flags & (1 << 3)) != 0;
+        public readonly bool IsReference => (Flags & (1 << 4)) != 0;
+        public readonly bool FieldPicFlag => (Flags & (1 << 5)) != 0;
+        public readonly bool BottomFieldFlag => (Flags & (1 << 6)) != 0;
+        public readonly uint Log2MaxFrameNumMinus4 => (uint)(Flags >> 8) & 0xf;
+        public readonly ushort ChromaFormatIdc => (ushort)((Flags >> 12) & 3);
+        public readonly uint PicOrderCntType => (uint)(Flags >> 14) & 3;
+        public readonly int PicInitQpMinus26 => ExtractSx(Flags, 16, 6);
+        public readonly int ChromaQpIndexOffset => ExtractSx(Flags, 22, 5);
+        public readonly int SecondChromaQpIndexOffset => ExtractSx(Flags, 27, 5);
+        public readonly uint WeightedBipredIdc => (uint)(Flags >> 32) & 3;
+        public readonly uint OutputSurfaceIndex => (uint)(Flags >> 34) & 0x7f;
+        public readonly uint ColIndex => (uint)(Flags >> 41) & 0x1f;
+        public readonly ushort FrameNum => (ushort)(Flags >> 46);
+        public readonly bool QpprimeYZeroTransformBypassFlag => (Flags2 & (1 << 1)) != 0;
 
         private static int ExtractSx(ulong packed, int lsb, int length)
         {
diff --git a/src/Ryujinx.Graphics.Nvdec/Types/H264/ReferenceFrame.cs b/src/Ryujinx.Graphics.Nvdec/Types/H264/ReferenceFrame.cs
index d205a47a45..9ab9d13204 100644
--- a/src/Ryujinx.Graphics.Nvdec/Types/H264/ReferenceFrame.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Types/H264/ReferenceFrame.cs
@@ -4,12 +4,12 @@ namespace Ryujinx.Graphics.Nvdec.Types.H264
 {
     struct ReferenceFrame
     {
-#pragma warning disable CS0649
+#pragma warning disable CS0649 // Field is never assigned to
         public uint Flags;
         public Array2<uint> FieldOrderCnt;
         public uint FrameNum;
 #pragma warning restore CS0649
 
-        public uint OutputSurfaceIndex => (uint)Flags & 0x7f;
+        public readonly uint OutputSurfaceIndex => (uint)Flags & 0x7f;
     }
 }
diff --git a/src/Ryujinx.Graphics.Nvdec/Types/Vp8/PictureInfo.cs b/src/Ryujinx.Graphics.Nvdec/Types/Vp8/PictureInfo.cs
index 844f21030d..76e07a3ff0 100644
--- a/src/Ryujinx.Graphics.Nvdec/Types/Vp8/PictureInfo.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Types/Vp8/PictureInfo.cs
@@ -5,7 +5,7 @@ namespace Ryujinx.Graphics.Nvdec.Types.Vp8
 {
     struct PictureInfo
     {
-#pragma warning disable CS0649
+#pragma warning disable CS0649 // Field is never assigned to
         public Array13<uint> Unknown0;
         public uint GpTimerTimeoutValue;
         public ushort FrameWidth;
diff --git a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/EntropyProbs.cs b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/EntropyProbs.cs
index b2858d2d83..dd5221b181 100644
--- a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/EntropyProbs.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/EntropyProbs.cs
@@ -5,7 +5,7 @@ namespace Ryujinx.Graphics.Nvdec.Types.Vp9
 {
     struct EntropyProbs
     {
-#pragma warning disable CS0649
+#pragma warning disable CS0649 // Field is never assigned to
         public Array10<Array10<Array8<byte>>> KfYModeProbE0ToE7;
         public Array10<Array10<byte>> KfYModeProbE8;
         public Array3<byte> Padding384;
diff --git a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/FrameSize.cs b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/FrameSize.cs
index d449ec4d63..31c08a529d 100644
--- a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/FrameSize.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/FrameSize.cs
@@ -2,7 +2,7 @@
 {
     struct FrameSize
     {
-#pragma warning disable CS0649
+#pragma warning disable CS0649 // Field is never assigned to
         public ushort Width;
         public ushort Height;
         public ushort LumaPitch;
diff --git a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/FrameStats.cs b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/FrameStats.cs
index 26aab50609..9b0325cf0c 100644
--- a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/FrameStats.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/FrameStats.cs
@@ -2,7 +2,7 @@
 {
     struct FrameStats
     {
-#pragma warning disable CS0649
+#pragma warning disable CS0649 // Field is never assigned to
         public uint Unknown0;
         public uint Unknown4;
         public uint Pass2CycleCount;
diff --git a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/LoopFilter.cs b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/LoopFilter.cs
index 7cb0fd7a82..ebef7f6778 100644
--- a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/LoopFilter.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/LoopFilter.cs
@@ -4,7 +4,7 @@ namespace Ryujinx.Graphics.Nvdec.Types.Vp9
 {
     struct LoopFilter
     {
-#pragma warning disable CS0649
+#pragma warning disable CS0649 // Field is never assigned to
         public byte ModeRefDeltaEnabled;
         public Array4<sbyte> RefDeltas;
         public Array2<sbyte> ModeDeltas;
diff --git a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/PictureInfo.cs b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/PictureInfo.cs
index 7d06f7474f..50569dbffa 100644
--- a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/PictureInfo.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/PictureInfo.cs
@@ -5,7 +5,7 @@ namespace Ryujinx.Graphics.Nvdec.Types.Vp9
 {
     struct PictureInfo
     {
-#pragma warning disable CS0649
+#pragma warning disable CS0649 // Field is never assigned to
         public Array12<uint> Unknown0;
         public uint BitstreamSize;
         public uint IsEncrypted;
@@ -44,7 +44,7 @@ namespace Ryujinx.Graphics.Nvdec.Types.Vp9
         public uint UnknownFC;
 #pragma warning restore CS0649
 
-        public uint BitDepth => (SurfaceParams >> 1) & 0xf;
+        public readonly uint BitDepth => (SurfaceParams >> 1) & 0xf;
 
         public Vp9PictureInfo Convert()
         {
diff --git a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/Segmentation.cs b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/Segmentation.cs
index f6c4f0b17e..ab9954c688 100644
--- a/src/Ryujinx.Graphics.Nvdec/Types/Vp9/Segmentation.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Types/Vp9/Segmentation.cs
@@ -4,7 +4,7 @@ namespace Ryujinx.Graphics.Nvdec.Types.Vp9
 {
     struct Segmentation
     {
-#pragma warning disable CS0649
+#pragma warning disable CS0649 // Field is never assigned to
         public byte Enabled;
         public byte UpdateMap;
         public byte TemporalUpdate;
diff --git a/src/Ryujinx.Graphics.Nvdec/Vp8Decoder.cs b/src/Ryujinx.Graphics.Nvdec/Vp8Decoder.cs
index cce9a57442..e56b23d73d 100644
--- a/src/Ryujinx.Graphics.Nvdec/Vp8Decoder.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Vp8Decoder.cs
@@ -30,4 +30,4 @@ namespace Ryujinx.Graphics.Nvdec
             rm.Cache.Put(outputSurface);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/Ryujinx.Graphics.Nvdec/Vp9Decoder.cs b/src/Ryujinx.Graphics.Nvdec/Vp9Decoder.cs
index 9bb3529e8a..f78bb70285 100644
--- a/src/Ryujinx.Graphics.Nvdec/Vp9Decoder.cs
+++ b/src/Ryujinx.Graphics.Nvdec/Vp9Decoder.cs
@@ -13,7 +13,7 @@ namespace Ryujinx.Graphics.Nvdec
 {
     static class Vp9Decoder
     {
-        private static Decoder _decoder = new Decoder();
+        private static readonly Decoder _decoder = new();
 
         public unsafe static void Decode(ResourceManager rm, ref NvdecRegisters state)
         {
@@ -25,9 +25,9 @@ namespace Ryujinx.Graphics.Nvdec
                 return rm.Cache.Get(_decoder, lumaOffset, chromaOffset, size.Width, size.Height);
             }
 
-            ISurface lastSurface    = Rent(state.SetPictureLumaOffset[0], state.SetPictureChromaOffset[0], pictureInfo.LastFrameSize);
-            ISurface goldenSurface  = Rent(state.SetPictureLumaOffset[1], state.SetPictureChromaOffset[1], pictureInfo.GoldenFrameSize);
-            ISurface altSurface     = Rent(state.SetPictureLumaOffset[2], state.SetPictureChromaOffset[2], pictureInfo.AltFrameSize);
+            ISurface lastSurface = Rent(state.SetPictureLumaOffset[0], state.SetPictureChromaOffset[0], pictureInfo.LastFrameSize);
+            ISurface goldenSurface = Rent(state.SetPictureLumaOffset[1], state.SetPictureChromaOffset[1], pictureInfo.GoldenFrameSize);
+            ISurface altSurface = Rent(state.SetPictureLumaOffset[2], state.SetPictureChromaOffset[2], pictureInfo.AltFrameSize);
             ISurface currentSurface = Rent(state.SetPictureLumaOffset[3], state.SetPictureChromaOffset[3], pictureInfo.CurrentFrameSize);
 
             Vp9PictureInfo info = pictureInfo.Convert();
@@ -54,7 +54,7 @@ namespace Ryujinx.Graphics.Nvdec
 
             Span<Vp9MvRef> mvsOut = MemoryMarshal.Cast<byte, Vp9MvRef>(mvsRegion.Memory.Span);
 
-            uint lumaOffset   = state.SetPictureLumaOffset[3];
+            uint lumaOffset = state.SetPictureLumaOffset[3];
             uint chromaOffset = state.SetPictureChromaOffset[3];
 
             if (_decoder.Decode(ref info, currentSurface, bitstream, mvsIn, mvsOut))