I have a Pi4B and a usb HDD. At some point when I want to stream a movie through Plex from my drive, the film is lagging and the cpu usage is 99%.. When I quit, it gets back to 0-5% after about 1-2 minutes. I tried to check what movies are these, bit streaming a 4k was no problem and after that a full HD did not work. Streaming is through Google Chromecast. Any suggestion?
About 50-60% of load a\occures when I dowload a torrent. Is this normal?