Actually, not only is freesync borderless stutter not fixed, but it seems there are no changes whatsoever for my 390X. It must be that the disclaimer 3 - Compatible with: AMD Radeon™ RX 400 & 500 series GPUs. Supports: DirextX® 9, 11, 12 & Windows® 7/10. applies to more than just the enhanced sync.
Oh wow, thats sucks. I thought that the R series cards were still supported??
I have an RX 470 here. Ive had problems all over the place with previous couple drivers I'm just happy that the crashing doesn't happen anymore. Nothing else seems to be fixed though even though they for example, claimed the freesync to be fixed. I havent tried any of the other features I've had issues with, like power effeciency, Radeon chill (which is probably still a mess even though that spread the support). FRTC which doesn't work in some games sometimes. These are just some of them.
The software support for AMD gpu is pretty annoying most of the time. The have nice features but are like half way working.