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KozGit / DOOM-3-BFG-VR

Doom 3 BFG VR: Fully Possessed. Doom 3 BFG with native Oculus Rift/Touch or OpenVR support
GNU General Public License v3.0
370 stars 52 forks source link

i5 9400F + RTX 2060 + Rift S - FPS drops and stuttering #346

Open TheMartens opened 3 years ago

TheMartens commented 3 years ago

Hi guys, I really like the mod and I would really like to continue playing but the issue with FPS drops and stuttering is really unbearable and I do not understand why is it happening. I tried 1.0 scale, ASW on or off, turned of MSAA but no difference.. game in some of the locations runs normally but in some with more lighting and people on screen its dropping too much below requested 80hz on Rift S. I think with i5 9400F + RTX 2060 + 16GB RAM game should run flawlessly. Any possible advice or solution is welcomed and thanks a lot in advance.

TheMartens commented 3 years ago

Guys, miraculously I managed to somehow fix it few minutes I posted this I just added +set r_fullscreen 0 to the shortcut / properties / target. Cant believe this helped.

TheMartens commented 3 years ago

Also I realized soft shadow option makes also a huge difference? :D how is this even possible with so old game?

phobos2077 commented 3 years ago

I had horrible lag every time I look and move around, barely playable. Then I added this to the shortcut: +set vr_APISelect 2 - basically forces to use SteamVR. Worked perfectly then - no lag, butter smooth.

Seinfelf commented 3 years ago

Hello. I tried both of these fixes and I still have drops, even though I check my task manager, and my pc isn't/shouldn't struggle with this. When its smooth the game is great, but I feel that in random spots, it just drops to the 45fps thing.

My specs are Ryzen 5 2600x, RX 5700XT, and 16gb of ram.

Any thoughts?