I have the same issue with my R9 280, I haven't overclocked it, no changes made to the graphics card at all, but after month of using, I keep on getting " Display driver has stopped responding and has recovered " in 90% of games I play. I've tried reinstalling my OS multiple times, no luck. Hope we get a fix.
My friend re-soldered the GPU chip with pistol for hot air and now i havn't problems. if you have make all with reinstal drivers with Clean Install AMD Graphics Drivers and TDR fix and others you can try this, but only if you have try all!!! If you dont know what you make give this on someone who have expirience with this.