@SnakeEyesPC Nice happy DX12 works for you correct.
I have the I9 - 9900K and from my i7-5960X yes a difference but once I got my ram at its correct speeds 4266Mhz and put in the ROG Strix OC 2080 Ti it made a huge difference.
On my 144HRz 40 inch screen on med settings and 2 settings on ultra I get 170 - 200Fps in BFV and I stay more near 200FPS for my screen size this is amazing to me.
I love the Maximus XI Extreme MB but some changes in Bios with XMP.. xmp 1, xmp2 for my ram XMP2 should work lol not so far. I could not get my ram on its speeds and yes it's in the QVL. I tried so many different bios it was crazy :/ It was not until I went all the way back to bios 602 think I put down bios 603 but its bios 602 I am on. Anyway once on 602 I got my ram at 4266 on manual settings, XMP 1 or XMP2 was a no go for me was not stable at all :/ .
It was not a fun build to set up and many people on ROG site still use bios 602 to have things stable with the OC . Was this build worth it now yes but the first 4 weeks I was smashing my head so mad XMP was a no go not stable and so much ram testing with karhu ram test paid for... best 20 bucks ever spent for a program to test ram. I also had issues on the new build from first start up DP cable would not work I had to put a HDMI cable on for the first bit until things got set up in bios and windows and never had this in the past with any build , new gen gear new issues :/ lol
So my point is if you go down this road what I said is a heads up you could run into some fun times setting her up. When all is said and done best rig ever but a huge pain to get stable with ram and my screen #$%!! that was a full on well I can't say the words on AHQ but you get the idea.