I've downloaded Prism4 drop8. Take AnimatedTabControl with its dependencies from StockTrader RI and put into my app. It works fine. And it's really cool!
But then I've noticed very high cpu usage in idle time in my app. I saw 25% on a machine with X800XL Radeon, 50% on a machine with some poor intel GPU. I've checked RI example and saw no such behavior in it. If I replace AnimatedTabControl with TabControl
then CPU usage goes.
I understand that the question is hardly related to Prism and that AnimatedTabControl is just an example for RI app. That's clear, but may somebody have an idea what can I to check.
In Process Explorer I see a thread which consume all CPU is "wpfgfx_v0400.dll!MILQueryInterface"