FString InternalDriverVersion
E.g. "15.200.1062.1004"(AMD) e.g. "9.18.13.4788"(NVIDIA) first number is Windows version (e.g. 7:Vista, 6:XP, 4:Me, 9:Win8(1), 10:Win7), last 5 have the UserDriver version encoded also called technical version number (https://wiki.mozilla.org/Blocklisting/Blocked_Graphics_Drivers) TEXT("Unknown") if driver detection failed