Reduce cpu load when playing video

Question

I'm using mpv playing video as a wallpaper on my system (Arch + swaywm), just for fun. And my question is how can I reduce cpu load (video size isn't important, they are few secends long), just because i don't have dedicated gpu, just integrated intel graphics (i7-10xxx) and beefy monitor (3440x1440). I've tried encoding videos with diffrent encoders, and I've reduced cpu load from ~70% to ~16% without loosing much quality with this "command":

ffmpeg -i [source] -c:v libx264 -profile:v baseline -r:v 24 -filter:v "crop=3440:1440" [output]

Cropping is there just because my source is 4k res. Can I go any further, or I will be loosing to much quality?

Thanks in advance