EDIT: I re-read your post and see you are using Proteus.
What model are you running for the 1080p 2x upscale? What version of Windows are you running?
I know 24H2 provided some significant performance increases… Here is a video that talks about 24h2 and includes some Intel testing for gaming.
I would also suggest doing some testing with disabling CPU virtualization in BIOS. I don’t recall what Intel calls it. This will disable something call Core Isolation in Windows. You can google for a detailed explanation. The short is it is related to security. Windows creates AV type of services in a virtual sandbox. I disable AMD’s virtualization feature in BIOS. I practice safe browsing, don’t download bad shit or link on shady links, and I have Bit Defender AV.
Something isn’t right for sure… I noticed your CPU utilization is higher than mine but that might be because I lock FFMPEG to 8 cores on my side.
