I'm in the same boat.
Yes. I have 2 files in the DxCache folder. 128MB and 4MB.
OS: Windows 7 x64 (updated)
Card: Sapphire Radeon R9 280
Native Resolution: 1920x1080
VSR Working: Yes
Maximum VSR Resolution: 2560x1440...
"I want to use FreeSync Technology because…"
I think this is just a placebo effect to "force" people to buy new hardware. Prove I'm wrong!
I think I have a similar problem. Before installing the driver, try to install the SteadyVideo inside AMD\AMD-Catalyst\Packages\Apps\SteadyVideo....
I have a HD7870 2GB Sapphire. Did everything like you told, but using DDu between the new drivers. After that, I got the driver from AMD site, and...
Worked like a charm. Thanks a lot.
Edit: I've installed the driver 14.9.2b on top of 14.4 and still working.