HUD only working at one table at stars?

[mec2210]

I reinstalled windows about a month ago and downloaded HUD and Pokertracker again, and for about three weeks everything was working smoothly. Then, about a week ago, HUD began to really slow my computer down and only works at one table, whichever table I open first. I have everything set up correctly; or at least not any different from when it worked correctly in the past.

Any info would be greatly appreciated. Thanks -