Note:

SRs crack suffer from self-inflicted performance issues, the technical
reasons of which we will not go into here. The time taken from clicking game
icon until main menu is reached and time to load a mission for instance
When comparing on our systems the time difference was 5-10 seconds and
15-20 seconds in favor of our higher performance crack. There is also a
quite noticable difference in FPS performance

Check it out yourself, and enjoy

1. Unrar this crackfix into the dir of the game
2. Play the game
3. Support the software developers. If you like this game, BUY IT!

Saludos !!