Hi Servaas Dejaegher
I'm not with Laminar Research, just a fellow simmer in the UK, but generally speaking, your CPU & GPU specs (being the most important hardware considerations) look great and should be well capable of managing X-Plane 11 software. The RAM on the other hand is on the low side, 32GB > would be better.
I'm not running VR, but I have a similar spec to you with 64GB RAM & two monitors and I'm currently getting over 60 fps, but that's with X-Plane 11.25!
If you're running version 11.30, then other simmers have reported similar issues, so you may need to file a bug report to LR accordingly?