Running in Crossfire should only make things better…although I'm not sure if we will see the difference in Rhino.
Most problems with PC Video such as low or limited resolution, flickering or seeing horizontal lines are due to missing or incorrect Video Card Drivers.
Benchmarks are marketing tools used to position a specific product to look better than competitive products.
Benchmarks are not a good measure of real world use or performance.
This will also remove the dll file causing the crash.
Note: As of November 2015, AMD removed the older drivers from their web site.