To confirm i've also tried the following:
Uninstalled Sonic Studio and tried running the exe without sound as detailed here (https://forums.faforever.com/viewtopic.php?f=3&t=15689)
Set the graphics to lowest possible.
Run exe as administrator and tried all compatibility options.
Mods deactivated:
Retirement V1.0
Resource Rich V1.0
Nothing But Time V1.0
Chess V1.0
Total Annihilation Music V4.0
And this was a saved game load from last night
V1.6.0 FAF
Savegame file is 222.5mb in size (cant share here due to size and not sure if you can take it and load it to test?)
Still no luck.