JK hate paused, busy!
I have no idea what is causing this but it's really annoying. Moving BB to another drive doesn't seem to change the behavior (SSD or HDD.) The hardware is capable and it's not a result of the demonstration recording.
It was a problem on my last computer too but it wasn't quite as noticable. Mostly happening with characters loading in (can see it happening when weapons haven't been used before though.) No AV installed yet, disabling overlays did nothing, etc.