Deinterlacing Yadif 2x or Yadif causes Stuffering and drop in FPS

[roar]

Hello,

When I set the deinterlacing to Yadif 2x or Yadif the preview window of OBS starts showing massive stuttering and the fps in the bottom right drops to approx 6fp.
I have read the both these interlacing methods are CPU intensive but the CPU in the bottom right is low at 2.5%.
This is without even starting the the stream. Every other deinterlacing method can be chosen without issue.
Is there a reason for this? Thank you for any assistance.

Rory

 

[roar]

Bump, has anyone had similar issues with this?

 

[roar]

Thank you for your response.
I think this is correct. I was turning the deinterlacer from blend to linear to yadif in case it pointed to something obvious.

 

[roar]

Any ideas @cyclemat or anyone really? It has to be something obvious and specific to these two encoders because if it was general it would find many people complaining about it.

 

[roar]

your CPU is Older than my son

Hahaha! Fair, it is an HP Proliant 1U server so there is no space to install a proper GPU but I will try a GTX 750 next week and see if it helps. But even when using any other de-interlacing method while streaming 1920x1080 25fps the CPU rarely climbs above 60%.

When Yadif is selected the computer grinds to a halt and becomes very sticky even when not streaming but the CPU remains <5% and when streaming it remains comparatively low.
I could understand if the CPU was 80-90%.

Hopefully the GTX will help. Thank you for the advise. I will report back.