I can confirm this issue on my Dell laptop (D830, Quadro NVS135M GPU with 190.18 binary nvidia drivers). My external CRT operates at 85Hz, while my laptop runs at 60Hz, but Compiz can only use one refresh rate for both screens.
Compiz should be able to set one refresh rate per x screen, instead of one refresh rate for everything (glXSwapBuffers calls are independent for each screen / OpenGL context).
I can confirm this issue on my Dell laptop (D830, Quadro NVS135M GPU with 190.18 binary nvidia drivers). My external CRT operates at 85Hz, while my laptop runs at 60Hz, but Compiz can only use one refresh rate for both screens.
Compiz should be able to set one refresh rate per x screen, instead of one refresh rate for everything (glXSwapBuffers calls are independent for each screen / OpenGL context).