I got the wierdest thing ever. Every third time I run my app, it goes into slowdown mode and every 10-40th frame takes 150-600 ms to render (compared to 30-60). Most of the time, it runs just fine.
This is with GF7800 GTX, 93.71 on dual-dual-core machine.
One context, Five FBOs (depth-peeling), dual-view.
Has anyone seen anything like this?