A simple enough map is suddenly stuttering majorly even when just staring into a simply shaded 9 triangle wall.
This map used to run well in that area and this is a new problem that seems to have been introduced with 4.18.
‘stat unit’ reports 22ms (it really shouldn’t, and didn’t use to)
But other stat commands like cpu, game, scene rendering report low sub 11ms values.
Might not be your problem since it started with 4.18 for you but I had major framerate issues at one point and found out it was because I installed EVGA Precision X. It has something to do with the widget menu stuff in Unreal and the editor has a ton of it always running. Killing the task and then reloading fixed the issue.
Thanks for the suggestions! Sounds like other people didn’t get that so problem must be on my end.
I don’t use PrecisionX, run on Windows 8.1, and yes its for Oculus. I could try turning off ASW but I’ll have to figure out how to do that.
I’ll look out for any slate windows but don’t think Iv’e spotted any.
You can turn off ASW using the Oculus Debug Tool, available in the Software folder of your Oculus installation. Through the same tool you can also turn on the various Oculus diagnostic HUD’s to understand a bit better what is happening on that end (FPS, latency, dropped frames, etc.)
There is a discussion going on about performance issues with the Oculus Rift since ~Nov. 17. It’s unclear whether it’s caused by the Win 10 creator update (although this doesn’t seem to be relevant to you, as you run on Win 8.1), a GPU driver update… or an Oculus firmware update. Disabling ASW appears to heal the effects a little, but overall it’s still an unsatisfying situation not to get any official statements in Oculus’ so called “support forum” on this subject:
Also note this thread about performance issues with the Oculus Rift, where the reports started in August (rather than Oct./Nov.). However, all of these observe a sudden negative impact on the experience and the reasons for it are totally in the dark…
For the records, I just reworked an old experience on UE 4.15 and, guess what, it is also getting a bit of stutter, which it never had. It used to be fluid and now not anymore. So, assuming it is not UE4 related, I am narrowing it down to:
Something wrong with the most recent NVidia Drivers
Something wrong with one of the recent Windows update
I actually had this happen to me also in 4.17 where I was getting really poor frame rates. I ended up using DDU to uninstall my graphic drivers and reinstalled them and it fixed my issues. I am not sure if it will work or not for you, but its worth a try