Windows 11 lag with Raptor Lake iGPU

[redleader]

I have been struggling with extreme lag in Windows 11 that was hard to pin down. Windows Explorer, Alt-tab and Office seemed like they were on a half second delay. Finally I noticed launching an OpenGL-based app would hard-freeze Windows for 15 seconds, including even the task manager which clued me into a GPU problem.

I've got the Xe iGPu on the Intel 13th Gen. I did a complete clean install of the latest drivers, but that made no change. There no hardware beyond what is on the motherboard, and the Windows install is less than a year old with not much beyond Windows updates, Office, Visual Studio, etc. I could do a clean install but it was laggy when this install was clean, so not confident that is going to be worth the time it would take to reinstall everything.

In desperation, I dropped an AMD dGPU from a different system in and that completely fixed the problem. Lag is gone and everything works great. Unfortunately it also doubles idle power consumption and I'd rather have the GPU in the original system, so if possible I'd like to get the iGPU working.

Anyone seen this and found a fix? I've got a similar system running windows 10 on the same iGPU and performance is fine for my needs. No idea why its not working right on this system.

 

[Lord Evermore]

Which exact processor? You put up with this for almost a year? Are you on 24H2 for Windows 11 yet?

Maybe try removing the drivers from Intel or the mainboard manufacturer and let Windows install whatever it wants?

This seems to be a not uncommon issue, based on a quick search. One suggestion was the power plan, changing it to the highest performance. Another was someone found installing the Intel Management Engine drivers for the chipset made a big difference. Another was "I built an AMD system to replace it".

Also this: https://forum.juce.com/t/windows-11-issue-with-opengl/53878