I went in the Beta 23 Dx11 version Graphics Details tab & disabled each setting individually to see which ones had the most effect on FPS as follows (in tower w\ clipboard up):
Sliders:
Object Detail slider--no change @ 44 FPS
Ground Object Detail slider--no change @ 44 FPS
Tree Detail slider--no change @ 44 FPS
Terrain Detail slider--no change @ 44 FPS
EM slider--None--no change @ 44 FPS, 1--no change @ 44 FPS, 2-change from 44 FPS to 36 FPS, 3-change from 44 FPS to 31 FPS, Full-change from 44 FPS to 28 FPS (this was expected w\ EM).
Checkboxes (left dialog box):
Disable Other Planes Skins--no change @ 44 FPS
Disable Shadows--no change @ 44 FPS
Disable Ground Clutter--no change @ 44 FPS
Disable Ground Clutter When In Flight--no change @ 44 FPS
Disable Post Lighting Effects--no change @ 44 FPS
Enabled Post Lighting Effects then disabled each individual subset setting just for giggles--no change @ 44 FPS
Disable Reflections--no change @ 44 FPS
Disable Detail--FPS change from 44 FPS to 71 FPS, enable detail FPS drops back to 44 FPS
Disable Bump Mapping--FPS change from 44 FPS to 68 FPS, enable bump mapping FPS drops back to 44 FPS
So from all this it appears that only w\ Detail and Bump Mapping under Dx11 since Beta 22 thru Beta 23 are the processes that have changed since Beta 21 Dx11 version to cause my Fury X to slow down and run choppy (graphics scenes run in double "lopes" followed by a slight delay in between the "double lopes"....for lack of a better descriptive). My hunch for this is due to the new VR coding bleeding in but only Hitech can confirm this (I do recall Hitech mentioning that there was to be a checkbox that was to show up at startup for a user to check if user was using a VR headset w\ the Beta in a thread in here somewhere...I want to say in the VR thread but I can't remember) so I'm waiting on official response from HTC concerning the Dx11 version issues.
As far as the scaling issues w\ in game mouse pointer goes the "fix" for now is to check the box under both Dx9 and Dx11 shortcut's Properties, Compatibility tab "disable scaling when high DPI settings are present" and hit apply. Due to the new VR coding in the game this fix may be a permanent solution....but again only Hitech can confirm.
Anyway, now you know...............
In the meantime I'll just play on the Dx9 version.
Beta 21, 22 and 23 Dx9 versions run smooth at 78-80 FPS using same graphics set up mentioned in earlier posting