Multiple people on this forum had the exact same problem you are having. However, I was not able to replicate the problem. I do not recall a solution posted. Is it possible to run a test on a different system so that we can try and isolate the problem?
See the post below from @FirepadCN using cpu i7,gpu 970.
You could also try to DM @Tsikinator and @FirepadCN and ask them if they solved the problem.
FYI, the Mac version of Unity doesn’t need the driver.