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 # Ryujinx Changelog
 All updates to the Ryujinx official master build will be documented in this file
 
+## 1.0.5939 - 2020-12-03
+### Changed
+- Changed uses of QueryModified to now pass a cached delegate.
+- Changed buffer tracking to use simple tracking rather than smart, as in practice smart tracking does not seem to be faster.
+  - Combined, these changes nearly halve buffer tracking time in SMO Metro Kingdom's initial view. Future PRs will help unlock more tangible performance boosts.
+
 ## 1.0.5937 - 2020-12-03
 ### Changed
 - This PR is a follow-up to 1.0.5915 and ensures the proper closing of copy handles that are passed by the guest and should be closed.