Scenery Crashes on Load Screen

I have removed all scenery from my CF
I have removed all Official add ons from MSFS
Running on Default stuff only apart from KORS which I am running as a test.

I have been running the sim since Day 1 and I have had a few issues like most of us I think. But overall my experience has been very positive. However I have now come across and issue which I hope is very easy to solve but I have spent the last 5 hours trying and I cannot figure it out. At first I thought it may be an ORBX issue but I am now not so sure.

AMD Ryzen 5 3600 six core
MB ASUS X570 plus
32 GB Ram
8GB AMD Radeon RX550XT (latest Driver 21.2.2)
2x 500gb SSD and 1 M.2 500gb as my boot drive

My issue is I cannot install (without a CTD) any scenery to the UK, I don’t have much only the following
KORS
1S2
EGNM
EGTB
EGLC
London Scenery Pack ORBX
EGMC

If I install any of the UK stuff I get a CTD when the Sim is loading to the Airfield (the Sim loads ok to the UI screen) I have KORS installed and it works fine, I have been there for 1 hour or more flying circuits.
The sim works fine with all the Default only scenery Leeds and Booker for Example.

I have all the photogrammetry turned on in the settings and I am on the High only setting.

I am sure it is something that I have not turned on on I have not set something. I have already reinstalled the sim.

Hope someone out there can help me get my UK scenery back.

Thank you

Mike