I noticed the generation moves from 1.1 to 2.0 when I put load on the GPU. My motherboard only supports 2.0 so that makes sense but I never noticed this before today. Try putting your GPU under some stress and see what happens? This is weird.
I have GPU-Z render test running in both cases, with 17.3.3 GPU correctly uses 3.0 and clocks are rising to correct values, however in 17.4.1 clocks are staying idle and bus interface stays at 1.1.
Check the screenshots attached in my original post.
Hey sorry, I misread your original post. Hope you find a solution!
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I have the exact same graphics card and after installing 17.4.1 my core clock locked at 525 MHz but memory didn't budge from 500. Played Garry's Mod and my system crashed after ~3 minutes, all monitors went black and had to force shutdown my pc. Had trouble booting as well, monitors were showing black screen and it took me multiple tries to boot to windows properly. After running DDU and reverting to 17.3.1 all my problems disappeared. It's obviously a driver issue.
AMD Sapphire R9 Fury Nitro
Self built desktop
Windows 10 64Bit Version 1607 (14393.693)
Radeon Software Crimson Edition 17.4.1
Asus Maximus VI Hero
Intel i5 4670k
2X8GB 1600MHz, can't remember manufacturer but I doubt it really matters in this case
Dell U2414H 60Hz Dislayport cable
Asus VG248QE 144Hz Displayport cable
Fujitsu 60Hz HDMI cable
I had a similar problem - the card (R9 380) stuck at 1.1 after a hang/crash while gaming. Only way to revive the card was pulling the card's plugs and re insert. Then it was able to go up to 2.0 again under load. Cause was a bad plug connection to the card - make sure both 6+2 (8 plug) is properly seated in its sockets. I even whirled those plugs in dish-wash solution to get it "grease" free ( just make sure all power is disconnected b4 doing this).
After that this problem was fixed