Problem:
Opening a brand new empty scene, I am unable to orbit the viewport, use the interface, or add objects without an insane amount of lag. 1-5fps if im lucky.
Any help would be greatly appreciated!
I have researched everything, uninstalled any programs I thought might be conflicting from the “Software Conflicts” doc
I’ve uninstalled/reinstalled UE4 launcher, tried multiple version of Editor (4.11-4.18)
I’ve opened up all permissions for UE4 through firewall/antivirus
I have updated all bios and drivers as well
The only thing left to try is to disable Nvidia Optimus in the Bios setting, and then short of that… reformat to a completely clean PC and selectively install apps.
PROBLEM SOLVED:
It was a program conflict - I had a friend suggest going through the processes and ‘End Task’ on each one until the performance for UE4 was normal. So I was doing this through tons of them with no success. But then I did it on Realtek Audio Manager - and boom… CPU performance went from 100% down to like 30-50 and UE4 was full operational!
Interestingly, I wanted to confirm this, so I restarted my PC so I could do it all over again. And UE4 worked fine. So maybe by killing the process, I cleared a cache that was causing the issue?
Can’t be 100% sure, but just know - if UE4 is so slow its unusable (in both UI/Viewport) then try killing processes as it might be a program conflict.
Just want to add, in my case closing MSI Afterburner makes the Blueprint editor run smooth like butter. It’s stuttering pretty heavily if Afterburner running in the background.
