then maybe you should try activating it then, just check the technical part of the forum -> it doesn't work, massive frame rate drops, i got worse (half) fps with Xfire activated
The key to getting it working is to make sure frame pacing is active, vsync off, and use fullscreen mode not windowed borderless. I also have CCC set to use CrossfireX for all apps including ones without a crossfire profile (second checkbox in CCC for crossfire).
I assure you you mine is working. 80+ FPS on average with 3xFire with peaks of around 132FPS.
Using only two boards as set in CCC I get a bit less than that at maybe around 70FPS roughly and lower peak.
Crossfire disabled gets me less peaks and dips but it stays closer to 60FPS on average.
MSI Afterburner verifies the use of 3, 2 or 1 card in each test scenario.
When people are getting the massive framerate drops in crossfire, they typically have been running in windowed borderless mode which the crossfire profile doesn't support.
Running Windows 10 TP 10061 build.
Beta 15.4 Drivers (revert from the forced crappy MS installed drivers that auto install).
Although it's not a WDM2.0 driver and both AMD and MS claim it's not compatible with these Windows 10 builds, it's definitely better and more stable than the engineering sample drivers auto installed in Win10.
Overclocked to 1000/1500/20% on two cards and 1015/1500/20% on one (different revision number).
Overclocked QNIX monitor at 1440 and 96Hz (Need to patch the AMD driver for this to work).
Only issue I have is that with the latest build of Windows 10 TP, CCC keeps reinstalling itself on boot and I have to wait a few minutes and manually start up CCC to make sure my settings are set before playing ED.