Xmen_a_uhd_hdr_x265_bluebird.mkv -

4K x265 files are resource-intensive. Ensure "Hardware Acceleration" is enabled in your player's settings to offload the work from your CPU to your GPU.

Ensure strong-intra-smoothing=0 is used to maintain fine grain and detail. 4. Common Issues & Fixes XMEN_A_UHD_HDR_x265_BLUEBIRD.mkv

Medium (slowest you can afford for better compression). 4K x265 files are resource-intensive