The new driver made it impossible for me to turn my monitor off and on while Windows is running. Once I turn it back on, my computer will crash (at least that's what I assume) and restart. I even tried this on a fresh Windows install. There are no such problems with 17.5.2 or the standard Windows WHQL drivers (17.1.1).
Using Windows 10 Pro and a R9 390x.
I've never heard of such an issue. I would stick with your current stable driver and wait for our next update.