LC: Stars refresh problems when multitabling 15+ tables cascaded?

[CheeseMoney]

I thought that this may be the best place to address this issue since no one outside of STT is playing 16+ tables except for crazy cash game setminers, and I don't know how many in STT visit the software forum. When I get to around 17 tables on my 20" monitor (regular sized cascaded) I've been having problems where the screen basically stops refreshing and I can't see my cards or buttons. Mousing over a button will sort of reveal it, but I can only solve the problem by exiting out of stars and then reopening the client. Is this a known issue? I used to play 25 tables fine. I'd say this started 1 or 2 updates ago, and I'm trying to rule out whether or not is a graphics card issue or a known stars problem. I'll post a screen shot the next time it happens.