High CPU usage - M1 Mac

Hi i just downloaded (and paid for pro subscription) Infuse 7 from Mac App store and tried to play couple of mkv movies from SMB (its same from my internal SSD) and i notices pretty high cpu usage - around 30% in Activity monitor, i also tried Movist and its around 6-8%. Videos are 1080p/h264/3.5mbps. And there was no indexing of library in background.

I have M1 Macbook Air with clean install of latest version of Big Sur.

Please fix this. THX