Seems to be connected to videos playing. If I idle on the one game I have and let the video snapshot repeat, the CPU usage eventually creeps up to 100% or near it. I don't know how'd this play out if I was scrolling through games with new videos playing each time. I have no idea how to fix this, so if anyone could help I'd greatly appreciate it.
I'd try changing the video engine to WMP but my system doesn't have it because I ripped it from my windows install (created a custom one) and the alternative ways of getting it haven't worked, so I believe my only option would be reinstalling windows, and that's a bitch.
This doesn't happen if I let the video replay inside VLC alone. So it's definitely related to BigBox somehow, or it's using an old version or something.
Edit: Added some more games, confirmed that it's related to the loading (or possibly also closing, not sure how BigBox deals with it exactly) of video playback. Small spikes each time until it eventually decides to shit itself. Loaded ~48 videos at once in VLC alone and my system only hung for a few seconds when closing them all, as opposed to long freezes in BigBox and videos being opened/closed at a much more moderate rate.
Edit: Attached an image just to show what it looks like on a graph. This was as I scrolled through the games. Seems to get worse the longer the program is running.