[THEBERBSTER]

Hi O
You just need to check a few things.
SH3 is not compatible with Windows 10 and needs to be run in Windows 7 compatibility.

SH3.exe and SH3Commander need to run as administrators.
Post #6 Running Other Applications As Administrator's > Pictorial

Your gpu needs to be setup correctly.
Post #7 Changing Nvidia And AMD Radeon GPU Settings > Pictorial

For other info on LSH3 check out my tutorial signature.
Peter