I currently have an AMD 5800x CPU and a RTX 5060 GPU and trying to edit HEVC/H.265 10-bit 4:2:2 footage from my Canon R6 Mark II. Playback is super smooth for the first 7-8 seconds with premiere pro utilizing about 50-60% of the gpu for playback. However, after the first 7-8 seconds, GPU utilization drops to about 10% or less and the footage becomes incredibly choppy and difficult to navigate. I am not sure why the GPU utilization decides to drop to 10% or less when it was running well before hand. Temperatures seem to be very stable and neither the GPU or CPU or drawing a lot of power.