stable-diffusion-webui-forge icon indicating copy to clipboard operation
stable-diffusion-webui-forge copied to clipboard

Slow image generation on 5090

Open ali-m-github opened this issue 1 month ago • 3 comments

Hello guys, I am getting really slow generation times with Flux.1 dev on my 5090 on windows 11 + 64GB RAM. Most generations are taking about 1-3 mins per a single image. Here is my settings

Image

ali-m-github avatar Nov 17 '25 17:11 ali-m-github

are you running someones fork? it may be best if you open an issue in their repository the reason i'm asking is because i see you have qwen and wan ui presets in the top left which aren't implemented in this repo

mkgiga avatar Nov 18 '25 13:11 mkgiga

are you running someones fork? it may be best if you open an issue in their repository the reason i'm asking is because i see you have qwen and wan ui presets in the top left which aren't implemented in this repo

Sorry! I have taken a screenshot from forge webui neo but the settings is exactly the same on Forge WebUI. I will update the photo now!

ali-m-github avatar Nov 18 '25 16:11 ali-m-github

It looks like you are generating on CPU due to the speed. Forge does not appear to support the correct CUDA toolkit which is CUDA >12.8 for your 5090, there are significant changes in that CUDA toolkit to make the 5090 work. People have been patching their forge installations by asking GPT. My best advice, use Comfyui and move on.

DragonDiffusionbyBoyo avatar Nov 22 '25 20:11 DragonDiffusionbyBoyo

just make one step when you LOAD forge, STOP IT, then regenerate again and it will work, i have rtx 5060 and i have the same issue on the FIRST GENERATION, but if i STOP IT and REGENERATE, it will do 2seconds PER STEP.... try it

LIQUIDMIND111 avatar Nov 26 '25 02:11 LIQUIDMIND111