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it doesn't matter in this case that others have same video card
it's about system's memory bandwidth

DragonicPrime
2 identical videos, 1 in SDR the other in HDR, the SDR 4k runs perfectly,  HDR lags.

it's still 10-bit from the video decoder and to the point in Vapoursynth script where it got converted to 8-bit...
try MPC-HC + Vapoursynth Filter, and disable P010/P016 right in LAV Video decoder properties

ALL

FYI, 10-bit color depth needs _twice_ the memory bandwidth compared to 8-bit

HDR doesn't strictly require 10-bit processing, if you play HDR without "allow 10-bit" in SVP then nothing bad will happen

edVL

and you're still capped by the video encoder

GOOD NEWS EVERYONE!

updated instructions

should improve FPS on 4080-and-better (probably 4070/3080 too, dunno), when performance is bound by the system's RAM bandwidth, not GPU power
i.e. for 4K playback

grobalt
> P.S. i ordered new hardware to test .. Ryzen 7700x, DDR5 7200 Memory etc.

cancel your order

UHD
> We are now testing

you are not

aloola
> I just want to report that I got 30fps on 4k transcoding

and you're capped by the encoder speed
try h264 instead
or set preset=fast in 'advanced' mode, cause it's set to "slow" by default

---> DON'T FORGET TO RESTART SVP after .js/.py file replacing, it may not reload these files automatically in some cases <---

here's a full script you can use for testing
run with
> vspipe test.py .

variables:
- frame size on line 16, "length" is the number of source frames
- CPU threads on line 6
- GPU streams on line 27
- SVP's add. functions on/off - comment line 69

I thought the problem was in a CPU threads number, which was 4 before, and it's not enough to feed the GPU. Now it's 8, but you're saying there's no difference. Which is strange.
DON'T FORGET TO RESTART SVP after .js/.py file replacing, it may not reload these files automatically in some cases

---
BTW use_cuda_graph=True gives only like 2% difference in my case

> 115 fps in 1080p.

just to be sure - what is the encoding speed with the generic SVP video profile?
I hope you're using H.264/NVENC, not "software" mode as on the screenshot above

> you need put the *.onnx files here C:\Program Files (x86)\SVP 4\rife\models\rife

yeah, my bad... fixed now

> isn't it should be FP16?

replace base.py

> realtime with mpv is working for now

doesn't work for me
"CUDA error: invalid device context"