H.265 disadvantages with video dimensions not multiple of 8 Are there any disadvantages (like worse image quality/more compression artefacts) when encoding a video in H.265 with dimensions that are not a multiple of 16 or 8, but instead a multiple of 4 or 2?
For example 1920x816 vs. 1920x818.

At least in file size there seems to be no difference, as far as my tests go.
Since H.265 is computer intensive, encoding H.265 video will consume a lot of time, especially your computer is not power enough. You have to upgrade your CPU and GPU and download a powerful HEVC video encoder that is able to activate the GPU acceleration to do the task.