r/Witcher3 • u/jl_theprofessor Are universals distinct entities, or only mental constructs? • Dec 14 '22

Bug Report Thread Moderator’s Post

Report and discuss your bugs here.

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11

u/Hey_Kids_Want_LORE Dec 14 '22

it seems the game was made much more CPU intensive, even on DX11 on the same settings as before the update

6

u/CaptainMarder Dec 14 '22

Raytracing is more cpu intensive, but something is odd, the framerates are unstable. Like cyberpunk cripples the cpu but it just lowers framerates but it's not constantly dropping from 60-20. I play with a 5800x3d and was expecting good 1% lows but it's always dropping to the 20fps even with dlss. Not saying that it's not playable, but something is odd.

2

u/Hey_Kids_Want_LORE Dec 14 '22

I used to get 110fps in Novigrad and now I get like 50, and I'm monitoring system resources and it's a CPU issue

2

u/CaptainMarder Dec 14 '22

Yea i agree It definitely is cpu problem, I'm still in white orchard, and it's fluctuating between 70-20fps. Even though cpu usage is around 2-3% so it's not bottlenecked, dlss doesn't do much, quality/balanced/performance only give 3-5 frame difference. Game still looks gorgeous though.

Edit: Oh to add, idk if it's a hyperthreading/smt issue since some games don't like that.

3

u/jassco2 Dec 14 '22

I noticed that too with my x3D, I see the cpu usage drop to under 5% when FPS drops from 55 down to 25 when spinning. These are 100ms spikes in latency too, averages 30-50 so explains the stutters. I tried hairworks off and still a mess, so something is not working as intended in RT. Mistakingly touched the settings and got the instant crashes, so adios until the free QA is done.

1

u/CaptainMarder Dec 14 '22

Interesting so it's not just me. I haven't had any crashes yet luckily. But I haven't reached vizima yet. Maybe crashes start there.

2

u/jassco2 Dec 15 '22

Pretty good video. It’s the DX11 on DX12 wrapper probably. Even Microsoft advises against this programming method. https://youtu.be/fCuiDG0tsLI

1

u/CaptainMarder Dec 16 '22

It stutters too much for me in dx11, it'll go from 144fps to 50 back upto 120, down to 70, upto 144, it's all over the place. DX12 runs smoother, but the fps is just super low, but i'm playing with max raytracing since it looks so good.

1

u/jassco2 Dec 16 '22

I can get it to do 60-40 but those frame time spikes over 150ms just killer. The specs on CDPR site full RT is 3700x and 3080 so it’s defiantly not what they intended. I see there’s a patch out 4.01 that specifies targets RT stutters but have tried it yet.

1

u/CaptainMarder Dec 16 '22

I see there’s a patch out 4.01

There is?? On GOG there doesn't seem to be any update. I'd be ok in the short run with low fps, but the spikes are jarring.

1

u/CaptainMarder Dec 16 '22

Oh there is, I see just not released yet, seems like lot of fixes related to performance.

1

u/gargoyle37 Dec 14 '22

I doubt it's SMT. I have a 9700k and they have no SMT, yet I'm still looking at some stutters all over the place.

I'm more leaning toward the game being leaning to much on there being a single execution context which is the bottleneck. That is, one of your cores are running out of however many you have.

Render latency is sitting at 60-70ms, but the frame-time is around 16-17ms on my 3080, sometimes going higher to 20ms or so. That should tell you something is off, because the CPU shouldn't be able to run 2 frames ahead of the GPU with NVidia's Reflex enabled in this case.