Hello all,
Last night, I suddenly encountered an issue with DCS that rendered the game completely unplayable in VR. At the time, I assumed it was an isolated incident, so I just shut down and went to bed. But it turns out the issue still remained today.
So, a little background info: I've been running this computer since 2018 (in norwegian, but the specs should be understandable enough): https://www.multicom.no/multicom-noox-i629c-gaming-pc/cat-p/c/p10639133
I've been playing DCS with an HTC Vive Pro for years without issues. Then, in the last month, I've made the following upgrades:
- First I got an HTC Vive Pro 2 to replace the Vive Pro. This worked fine.
- Then I added 16 GB of RAM
- And finally, on last thursday, I replaced the 1080 GPU with a new RTX 4070 super
So, I played DCS in SteamVR thursday night and friday night, without any problems (although SteamVR did crash on some occasions, which was solved with restarts). Saturday night worked as well, initially without any problems. But after several hours of gaming, the game suddenly started lagging to the extreme. I'm talking MUCH less than 1 FPS, the frame typically took several seconds to update, and eventually just froze up completely, and the image in my HMD just started "jumping around" randomly, as if I was moving my head erratically, although my head was perfectly still. Eventually, the game crashed, and SteamVR informed me of an "unexpected error".
At the time, I thought nothing of it, and just went to bed, but when I tried to run a new session tonight, I was having massive issues just getting in to Steam VR Home. It either never launced, or launched with an EXTREME lag, and eventually just froze up. So I reinstalled SteamVR, managed to start DCS again as normal, and assumed everything was solved. But, 2 minutes into my next mission in DCS, the same thing happened again: Extreme lagging, and eventually everything froze up.
So, I decided to try to uninstall EVERYTHING - Steam, SteamVR, every HTC Vive software, etc, and am currently in the process of reinstalling. While waiting for that, I'm googling the issue, and I'm finding several threads from about a year back from users with new RTX 40-series cards reporting similar issues, and the problem only being resolved when reinstalling their old GPU.
Still waiting to see whether the reinstall will solve this, but I am not optimistic in light of the google findings. But I assume there's plenty of others RTX 4000 VR-users out there, any ideas what could be causing this and what the solution could be?
Edit: Trying to test HTC Vive software while reinstalling results in the following error message:
SteamVR could not be initialized for unknown reasons. (Error: Not initialized (109) (109))
I am, however, able to enter SteamVR Home as usual, which seems normal, Whether it will last or not remains to be seen when DCS is reinstalled again. Again: Not optimistic.
SteamVR Version 2.4.3