Why does crossfire not always work properly?

[programram]

So I've been "playing" Elite dangerous but my fps was terrible and textures were popping in and out so after I disabled crossfire my fps never dipped under 75 on ultra and the textures stopped popping in and out and it looked normal. http:// check out the screenshot that's how it looked like for me

 

[programram]

I know almost for a fact this isn't my build I have a bit of a overkill psu for my build so that leads me to think crossfire in it self isn't very good. But in other games it works fine and even better I just don't get why I got more fps without crossfire.

 

[Yamitime]

It is dependent on the actual games you play. Some games are optimized for crossfire and scale really well. others are not designed for crossfire and give varying results

 

[elbert]

Elite dangerous was tested to get almost doubles performance on Crimson 16.4.2. Your pic looks like a video card starving for power issue. What video cards and PSU do you have? Could be a video card going bad also. Possible a corrupt driver. First uninstall and use DDU to remove old configs. The download fresh new drivers.
http://www.guru3d.com/files-details/display-driver-uninstaller-download.html

 

[Yamitime]

Try 16.4.2 it seemed to work for Elbert