Buffer Underflow Error

Hello,

I am for the first time having issues running the game after 5k hours. I am having a "buffer underflow" crash over and over.

attempted fixes-
Game reinstall
file verification
settings changes (directx to vulcan/ changing everything to low)
changing servers
clearing steam cache
driver updates

I am unsure at this point what to do for the game to run. Nothing in my hardware has changed, internet is stable, CPU,GPU,and RAM usages are all within normal running speeds/temps/percentages

If anyone can help please let me know
Last bumped on Jun 9, 2026, 3:41:54 PM
"
ImZeda#2858 wrote:
Hello,

I am for the first time having issues running the game after 5k hours. I am having a "buffer underflow" crash over and over.

attempted fixes-
Game reinstall
file verification
settings changes (directx to vulcan/ changing everything to low)
changing servers
clearing steam cache
driver updates

I am unsure at this point what to do for the game to run. Nothing in my hardware has changed, internet is stable, CPU,GPU,and RAM usages are all within normal running speeds/temps/percentages

If anyone can help please let me know



it's a shader bug they are having .
you can learn how to solve it from this post:
https://www.pathofexile.com/forum/view-thread/3838854/page/3#p26713924
I had the same issue after the latest patch. Removing all MTX from my character fixed the problem.

Report Forum Post

Report Account:

Report Type

Additional Info