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A lot of people have been experiencing issues with Crossfire in Windows 10, including myself. So here is a guide on what to do to fix some of the the issues- I'll try to be as thorough as possible, and this is not going to have every solution but will likely help you in any case.

First off, if you can do so try to do a clean install of the latest driver. Currently that is Catalyst 15.7.1.

If this did not help, then see if you can do a clean reinstall of Windows 10. Some issues may have occurred in the event that you upgraded from Windows 8 or Windows 7, and these sometimes can be fixed by doing a clean install.

If both of those options did not work- here is the slightly harder way to permanently fix your Crossfire setup. The ULPS feature on AMD GPU's (a power-saving feature that is questionable performance-wise to begin with) interferes very badly with the built-in Windows 10 power saving features. This is why you sometimes can't enable crossifre, or it becomes incredibly glitchy in Windows, or you get BSODs or black screens randomly. So, you will have to turn ULPS off manually. Here is how you go about doing that:

First, type in "regedit" into the command line to run the Registry editor program. It should look something like this:



Next, bring up the "edit" Menu and click on "Find":


When you click on "Find" you should see this appear:


Now, type EnableULPS into the blank space and hit "Find Next" :


And then you should see something like this appear:



Now double click on EnableUlps and this box will appear:


Switch the 1 to a 0, and then hit OK. Be careful not to change anything else, only the EnableUlps setting.

Now, you can exit the Registry editor and reboot. It may take a few reboots for the effects to fully be shown, but this fixed my Radeon 5970 crossfire issues, and should clear up issues for you as well.

Let me know if there is anything else I should add or for any input you have! Thanks!
    
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CPUMotherboardGraphicsGraphics
FX 8370 Asus Sabertooth 990FX R3 Sapphire Nitro R9 390 OC w/backplate R9 390X Devil 
RAMHard DriveCoolingOS
OCZ Platinum  WD Velociraptor Deepcool Genome built in AIO Window 10 64 bit 
MonitorMonitorMonitorKeyboard
HP LP2465 HP LP2465 HP LP2465 Redragon K552 Red 
PowerCaseMouseMouse Pad
OCZ EliteXstream 1000watt Deepcool Genome II Redragon Mouse GamerStorm Mousepad 
AudioAudioAudioAudio
Razer Carcharias Onkyo TX-SR605 Bose Monitor KLM Center speaker 
  hide details  
Reply