Slow upscaling on 40 Series NVIDIA cards?

[khydrogenous]

Hi, has anyone else had issues with slow upscaling (8min on a 4070 for a 10s 360p video upscaling to 4K)?
I'm running debian 12 stable, card stays at 100% utilization from start to finish, VRAM hits between 10 and 36%, CPU hangs around 7-9% the whole time. Sometimes I have to end the program early because if the first 2000 frames took 8 minutes, then the last frame will take 5 minutes all on its own. No errors or output in the console. I'm running:

ffmpeg -hwaccel cuda -i input.mkv -t 00:00:10 -c:v h264_nvenc -c:a copy output.mkv && docker run --gpus all -it --rm -v /home/me/Downloads:/host ghcr.io/k4yt3x/video2x:5.0.0-beta6 -i output.mkv -o output2.mkv -p3 upscale -h 2160 -a waifu2x -n3

I use CUDA in all my other containers. Thanks in advance.

[rquaale]

I'm having the same issue with a 4090 but I'm doing 1080 to 4k so it doesn't look blurry on my 4k monitor and for a ~20 min video around 30k frames it takes 6+ hrs

[SimonHamour]

Same here, i have cuda, but it take 12 hour to process it with 0.18 fps. i mean is that normal?
Mine said on [libx264 @ 0x55ec300c9180] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
it using CPU?