—SOLUTION–
Disable MPO using registry file at this [link][1].
Below are troubleshooting steps as described by Jenkins Gage. Big ups!
1.Try to disable MPO by referring to this [link][2]
2.If step 1 doesn’t work, try to have a clean install of nvidia driver 460.89
3.If step 2 doesn’t work, try to run editor in opengl by adding an option -opengl4 to the launch command
4.Check if your card is running in PCIE3.0
----ORIGINAL PROBLEM----
Recently splurged on a TR3990X and ASU TUF RTX 3090, but the editor performs worse than my old PC w/ GTX 960. Even with a blank project, UE 4.26 hangs at 45% on initialization, then 20 sec later when the editor is loaded the whole screen steadily jitters every 1 second and the entire PC slows to a crawl, seeming like the GPU not being utilized? FPS around 14-20. Screenshot of specs attached.
Runs Cyberpunk2077, Houdini, Blender, and dozens of other programs beautifully, but UE 4.26 is unusable. PC is usable again after closing UE.
Steps I tried:
- Uninstalled/Reinstalled NVIDIA Studio Drivers ver 461.72.
- Update to latest Windows 10 ver 20H2 Build 19042.804
- Uninstall/Reinstall UE 4.26.1
- Searched forums/stackexchange for similar issue, trying to tweak driver/project/editor settings to optimize performance, etc
No improvement. Mind boggled. Would appreciate any help.
Van