

Unless you are running on Pata drives from the 90s or have movies in fucking 32k, there is no reason for movies on the hard drives to buffer.
Probably something going on with your server causing it. The HDDs connected to a bad card, or something keeping the drives very busy

Doesn’t look like you have set any limitations on uploading to it?
I’ll just go ahead and upload my 20TB or so of linux ISOs to your public facing website where everyone can see what is uploaded to it…