[Bug] Render Regions cause a blank screen after moving far enough to render new chunks

[Maaaaze072]

short description of the bug

I get a blank screen after moving just far enough for new chunks to render in game. the blank screen makes the game unplayable.

Steps to Reproduce

1. launch minecraft with optifine
2. enter a world
3. move far enough for new chunks to render

OptiFine Version

I tried 1.20.1 and 1.21.1

Installation Method

I used the standalone downloader.

Other Installed Mods

Sildur's Vibrant Shader High 1.52

Additional Information

SOLUTION: TURN OFF RENDER REGIONS @ OPTIONS > VIDEO SETTINGS > PERFORMANCE > RENDER REGIONS: OFF

[Seasonull]

Excellent. Will update if issue persists but seemingly fixed.