When I start a fullscreen game, the computer instantly freezes and I have to do a hard reset.
Non-crossfire games are working fine. I have tested both the cards on their own and both are working. It is also not a PSU issue as my 1000W PSU should be more than enough for the two cards.
The funny thing is that 15.11 drivers work fine, so this must be due to Crimson drivers. Is there any fix for this besides rolling back to older drivers?