[THEBERBSTER]

Hi GA
You should not need a compatibility mode with Windows 10 for SH5.

Check this out and trace your steps as to missing something that you should have done.
Pay special attention to the PDF installation instructions how to start your game before enabling mods.
Post #433 A Pictorial Step By Step Guide Through The Wolves Of Steel (TWOS) Installer > Pictorial

What are your systems specs?
With my SSD drive it takes 3 minutes 22 seconds from when the TWOS loding screen disappears to the main menu appearing.
With a mechanical Hard drive I suspect you are looking at over 5 minutes.

You could also have a look in Silent Hunter 5\data\Applications where you will find the Dgbview application.
Start this before using your SH5.exe and it will give you lists of what is happening as the game is loading.
If there is a problem then it should tell you what it is.

Another useful source of information is the Log file which you will find in the main menu.

Peter