When playing videos on VLC, its CPU usage in my quad-core Xeon (E3-1230) lingers typically around 20%-50% (depending on quality and format), and frequently jumps to 100% for about a second or two, causing all video to freeze (not only the video being played itself, but all applications stop responding altogether and the mouse pointer won't move). The sound plays just fine without interruption even during these freezes, however. This only appears to happen in VLC, dragon player works just fine (but I much prefer VLC).
Anyone know what's up? I have Radeon HD4670 with free drivers on Debian testing if that matters (I disabled both GPU acceleration and hardware overlay, neither of which made any difference).
I don't use Linux because it's free. I use Linux because it works.