Does the Crossfire X status icon show on the top-right corner, when enabled through CCC tray icon settings, during a gameplay session with a game that actually supports crossfirex by default, in full-screen mode ? Have you double-checked if crossfirex is enabled in CCC ?
What does gpu-z, afterburner, or any other good monitoring program report ? Including pcie bus speed.
Have you checked for loose cables (though unlikely) ?
Does both gpu adapters function properly on their own ?
What exact PSU model are you using to power on the whole system ?
No Status icon,
Enabled; tried disabling, and reinstalling latest drivers;
Tried toggling full screen;
Afterburner indicates second card no longer utilized;
no loose cables;
gpu is a fractal platinum 1000w
figured out the issue:
If you run F.Lux in the background with or without crossfire in Windows 10, you get a microstutter; you need to disable it for gaming