That's not really a problem preventing me from playing, but it's a little annoying, and I don't have any idea why :
When I double-click on one of the S&M games, the lauch interface appears in approx. 4 seconds. It's not running "fast" but quite well.
When I double-clic W&G first ep, I have to wait up to 32 seconds to get the launcher ! Why is that ? After that the game behaves correcty.
Note : all the TTG's games are installed in an external hard drive (to share the same install among my computers). So they share the same hardware. I did not test on another computer, but I'll do.
What does the game before starting the launcher ? It doesn't seems to lose its time on the Internet, chatting with some TTG's server... That should make the considering of making a "launcher-skipping" option more accurate, as the Linux users ask too.