Every time i go in to a world for a sec my game is froze and it logs me out of my world and take me back to the minecraft launcher. 1.16.4 problem.
crash-2021-03-01_19.40.23-client.txt

This issue has been marked as stale because it has been inactive for 3 weeks. It will be closed if it remains inactive for another 3 weeks.

This issue has been closed since it has been inactive for 3 weeks since it was marked as stale.

There has been tons and tons of issues opened for the same thing
Try to update Optifine to version 1.16.5_HD_U_G6. It works with 1.16.5 and 1.16.4