Managed to fix it and stop the CTD’s 0xc0000005
I’ve been getting the CTD’s due to XMP on motherboard (ASROCK Riptide 650M) by simply turning off XMP and selecting the memory speed manually I no longer have CTD’s with running my GPU undervolted.
Since Friday I’ve not had a single CTD and I’ve completed a number of flights.
Hopefully this might help some others who are getting CTD’s.