Not an unity/compiz issue I will tell.
I have the same thing if I try, like you setting a high resolution on my external monitor (1600 x 900), no issue if both are using 1024x768. Either related to hardware performance or driver then. Reassigning to mesa
Not an unity/compiz issue I will tell.
I have the same thing if I try, like you setting a high resolution on my external monitor (1600 x 900), no issue if both are using 1024x768. Either related to hardware performance or driver then. Reassigning to mesa