Current conclusion
Windows local patch reaches world creation, movement and saving. The same gameplay result is not established on unmodified main.
Minecraft PreviewPS5
Platform test results
Windows · World creation, movement and Save & Quit
IssuesA world can be created, entered, explored and saved; keyboard and audio work. At 36 chunks the reporter measured 30.8–31.7 FPS with the patch, versus about 7 FPS on main.
Build: main d4c196c2 + reporter's 57-file local patch
Report: Oct 7, 2026
Known issues
Windows · World creation, movement and Save & Quit
- The gameplay and performance results require a substantial unmerged local patch.
- The guest-allocation lock still causes severe streaming freezes and occasional 3–4 FPS stretches.
Test environments
- Platform
- Windows
- Game version
- 1.21.40.22
- Hardware / tools
- Windows 11 Pro; i9-9900K; RTX 2080 Ti
PPSA19639 refers to Minecraft Preview 1.21.40.22, not the standard Minecraft release.