So you picked a good time to bring this issue up, because it's something I'm going to try and work on this weekend. It only affects Windows 8.1 x64 users currently and presumably Vista x64.

The quick fix it is to start the tracker before PS2. The alternative quick fix is to press alt+enter instead of alt-tab to turn on the tracker, then press alt+enter after you have the in-game overlay. (Alt+enter toggles full screen)

The long fix is me spending sometime in Windows 8.1 going over 64-bit assembly. I've given you access to Beta 10 since that will be updated first. Check your pm for more information.