Micro stutters / single frame drops

[podonnell]

What CPU, GPU, and OS is your server running?

i7 - 4790k CPU
Geforce 570 GPU
Windows 10

Maybe the CPU is a bit old for handling a conversion of a BD Remux with special audio. Especially HEVC video (though I don't think that should matter here much since the HEVC is being passed directly).

And a side note. Are you using the CPU's iGPU or the Geforce 570 for HWA in Jellyfin?
Why have both if Jellyfin can only use one at a time?

iGPU as the 570 doesn't support the NVENC that was needed.

570 is used for things outside of the server.

I would agree that it only impacts the transcoded files, but after a transcode is complete, isn't the CPU idle?