Yours seems a bit lower than I’d have expected. and unstable too…
I have a very old 4 core, 4 thread i5 2400 @ 3.1 GHz and a GTX970, and see around high 30s to low 40s.
The older (March) version gave around 25 fps.
Both at highest standard settings, fps counter on, and 1080p on a GSync monitor (which supposedly helps a bit with tearing & stutter). Old style 7200 HDD for Win x64 disc, USB 3.0 HDD for the game & data drive.
Image quality seems to degrade more at lower settings than with the earlier Beta - significant texture streaming/LOD issues on certain walls very noticeable at anything other than the highest setting. This doesn’t look like it is working as designed though as generally IQ remains high apart from these few defects.