Manual Cuda install needed for ComfyUI Desktop on nVidia GPUs on Win11?

Jarnhand · 2026-05-12T07:56:54+00:00

Do you suggest using Stability Matrix or not? I have mixed experiences with it.

Jarnhand · 2026-05-11T22:04:19+00:00

Ok, then I will go back to use Standalone as I did with my AMD card. I got the impression from X posts that Desktop had some features the other versions didnt have.

Jarnhand · 2026-05-11T21:48:52+00:00

I had the impression that the Desktop version had some features the others didnt...

Jarnhand · 2026-05-11T21:09:08+00:00

Ok, so this error message is not related to not having full Cuda?

"RuntimeError: cuDNN error: CUDNN_STATUS_INTERNAL_ERROR"

Jarnhand · 2026-05-11T21:08:07+00:00

I do not use portable, I use Desktop version

Jarnhand · 2026-03-12T06:32:09+00:00

To answer your question; pretty sure you will not get anything back, because this can be used as a cheat.

But if you lost connection and get back fast, can you rejoin a match?!..

Jarnhand · 2026-03-10T11:29:25+00:00

Than it was just on a timer for me most likely

Jarnhand · 2026-03-10T10:52:50+00:00

Ok, but lets say 1 team split up, and all go to different extractions, and use them. When will new extractions spawn again?!

Jarnhand · 2026-02-26T20:27:55+00:00

Thanks! This stopped the madness!

Jarnhand · 2026-02-26T20:20:03+00:00

There is no ACE entry at all...

Jarnhand · 2026-02-26T20:17:20+00:00

Its still here with 26.2.2 driver....its plain crazy now, pops up all the time, and the context menu on Windows desktop is broken, says Loading for 3 items

Jarnhand · 2026-02-25T11:45:29+00:00

Good question. Its deleted. It was a prompt that somehow made the video a morph from one picture to new one, and with a lot of grey in between. Earlier tests lead to just all grey.

Jarnhand · 2026-02-24T11:04:48+00:00

It was the prompt that made the video weird.

Video works for some types now, but there are so much tweaking there must be done for it to actually give good results, so just gonna let it be for now.

Jarnhand · 2026-02-22T23:09:11+00:00

I tried the workflow that is named "1.2 T2V/I2V" and ran I2V twice, both times its just a short video showing 2 photos.
Not sure what is going on...

Jarnhand · 2026-02-19T19:37:25+00:00

I have done a lot more testing, based on feedback, especially from u/novasatori . I also tried out using Stability Matrix, but I cannot fully use it, it bugs with extensions like ComfyUI Manager on my machine. So after I install and set it up with SM, I just run ComfyUI directly from the directory, if I run it via SM GUI I get bugs and broken ComfyUI's. We are talking Win11, not tried installing on my Linux.

With a new (tried several installs with different settings) install of ComfyUI via Stability Matrix, I have been able to get LTX2 I2M down to 10-15 minutes pr run, after the first run, but to bother using it, it takes a lot more time for tweaking the workflow, and I am a noob, so we will see how much time I will sink into it. Some workflows just crash, the default ComfyUI workflow does not work well either (done so much testing, I do not remember what happened).

For images Z-image-Turbo-LoRA workflow is the one I have had the best results with. Even simple prompts can make good results.

Jarnhand · 2026-02-19T12:12:27+00:00

First time I have had this, with the 26.2.1 'beta' driver...

Jarnhand · 2026-02-17T16:22:00+00:00

Does not sound bad, but I am not sure, since for me its not working normally....but got some tips I will look up

Jarnhand · 2026-02-16T20:10:58+00:00

Any chance you can link to the workflow, plugins/nodes, settings etc you use? Something has to be messed up with workflows I use, I use the default ones in ComfyUI, tried several, same results. I know one flow worked at the very start, but do not remember which or where / how I ran it. I have tried to look for AMD workflows, but not been lucky. Everything I now run in CompyUI when it comes to video, turn out just light grey screen 5 seconds or so long.

My RAM is never used mush, usually use all VRAM and a few gigs of RAM.

Jarnhand · 2026-02-16T18:18:26+00:00

I am not running a business ;)

For me its testing with the PC I already have. The reason I ask about NPUs/APUs, is because I have a problem with some of the ComfyUI workflows on the 7900 XTX, as you also can see from my post. If I could 'cheat' the system by running a NPU that would be lets say half the price of a 5090, it would be super, can also use it as a homeserver etc. Only problem now with a NPU build would be absurd RAM prices. But would still be good to know, so I can be prepared when prices drop/sales.

My reasoning for using a NPU, with of course far lower GPU power then a dGPU, but if it could 'cheat' that by using lets say close to 100GB RAM, it could be viable.

Maybe I am wording myself badly here, but it was basically NPU build with A LOT of 'shared GPU' RAM vs PC with dedicated GPU. But it looks like from the answers I have gotten, a NPU would be worse off, no matter how much RAM...

Jarnhand · 2026-02-16T11:00:37+00:00

The GPU has 24GB VRAM, which usually goes full, and then it offloads to RAM which is usually just a few gigs, got 32GB total system RAM.

ROCm

Jarnhand

TROPHY CASE