Rainbow Pixelation

[AncientRome]

It seems after 30 minutes or so of play that some textures start to have a rainbow pixelation effect and is consistent until I restart the game.

 

What seemed most strange to me was that the objects have the rainbow pixelation at a distance, but when I approach it disappears.

 

I have looked online for a while and some people claim it's a problem with AMD hardware or drivers. My GPU is an RX 480 (8 GB) with latest drivers.

The pixelation happens to random objects in game, but the objects will consistently be pixelated until I restart the game.

 

I don't have any graphical enhancers like ENB or SweetFX installed.

As far as I can tell the pixelation started recently for me, but has been a problem for other users for a long time.

 

 

 

[kelticpete]

well, a month later. 26 views. well now 27. I have same problem. just used DDu to uninstall drivers and start a do over. actually a bit worse.

[Krolista]

I have had the same issue occur as well. So far I seem to have at least severly reduced the amount of times the pixelation happens by setting Texture Filtering - High, Surface Format Optimization - On, Shader Cache - On and Tesselation Mode - AMD Optimized, in Radeon control panel. My gpu is a Sapphire Nitro R9 Fury.

[steve40]

It looks like it's a mipmap issue, as you only see it at distance. It might be that you are using replacement textures that have a problem with the format of their mipmaps.

 

Try editing "Fallout4Prefs.ini" in "C:\Users\<user>\Documents\My Games\Fallout4" and find "iTexMipMapSkip" under [Display]. Change the value to -1 (if you can't find this setting, add it to the ini file)

 

If that fixes the issue, identify and delete the culprit textures from your game's "Data\Textures" folders, then set "iTexMipMapSkip" back to 0.