Which NVIDIA driver version are you on - the newest 461.09 ones?
I built a new gaming rig this new year (10900k, Gigabyte 3090 RTX) and am getting this hang with it. Never had problems like this before and it’s the weirdest thing ever. It’s easy to recreate just by maximising the editor (screen has no start bar, that’s on another window) and then clicking the File menu and running the mouse between the next three menus and back. It feels sluggish as you mention, and eventually hangs the whole GPU after a few seconds. I have to win key + shift + ctrl + b to fix becayse if I leave it how it is it eventually crashes with this:
and then it’s a 50/50 chance of my computer either locking up, or having a BSOD with a somewhat-random message (IRQ less of EQ, Video scheduling, etc.)
Reliability history in Security & Maintenance shows these for each occurrence:
Problem signature
Problem Event Name: LiveKernelEvent
Code: 1a8
Parameter 1: 1
Parameter 2: 0
Parameter 3: 0
Parameter 4: 0
OS version: 10_0_19042
Service Pack: 0_0
Product: 256_1
OS Version: 10.0.19042.2.0.0.256.48
Locale ID: 2057
I tried turning on the scheduling option you mention but that actually completely broke my rig (started getting BSODs in raytracing apps) and I had to reformat. I don’t have HDR so can’t try the second option.
The weird thing I’ve found after investigating:
- Seems to be the UI causing the hang and not the actual game. It’s when interacting with menus, buttons, etc.
- Only happens when the editor is full-screen (no start bar). If the editor is not maximised and I do this, no hang and it doesn’t feel sluggish,
- Only happens on that one (4k native) monitor, even if the monitor is not set as the main screen. If I try this on other monitors it’s not sluggish and doesn’t hang.
- Only happens when plugging this monitor in via DP rather than HDMI. On HDMI it’s fine. Not sluggish and doesn’t hang,
- Happens with any UE4 window. For example, if I put the UE editor on a screen that doesn’t suffer from this problem and put the blueprint editor on the main screen full-sized, it suddenly feels sluggish and UE hangs/RHI crashes.
- Only happens for me on 461.09. 460.89 is fine - again - not sluggish and doesn’t hang
- At one point I had it fixed by turning off scaling in the NVIDIA control panel, but that doesn’t seem to fix it now.
- I didn’t encounter this on my previous machine in an identical setup (same monitors, etc.). That machine was on w10 1909, though.
I was hoping it was an nvidia driver issue, but based on the fact some of these posts have identical issues back in April/May (and I’ve found many more on the internet googling that LiveKernelEvent and the crash. Feels like this is related to Slate acting badly with the w10 2004+ and the full-screen game optimisation stuff that you now can’t turn off.