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.
High Dynamic Range, providing better contrast and color depth than standard video. XMEN_A_UHD_HDR_x265_BLUEBIRD.mkv
To play or manage a file with the naming convention , you need a setup that supports 4K resolution, High Dynamic Range (HDR), and the HEVC (x265) codec. This specific release tag indicates it is a high-quality "repack" or encode by the group BLUEBIRD . 1. Requirements for Playback 4K x265 files are resource-intensive