To anyone who's buying or coming back to this game - please install openOMSI. It is so much better and finally properly playable!
I've been playing OMSI for almost 10 years now (I even have the disc version), but holyyyy. The dudes at Open OMSI really cooked. OMSI 2 feels like a brand new game. I really recommend installing Open OMSI. The base game is kinda outdated at this point.
I love that it is realistic and there is a new game (at current time of writing) called OpenOmsi that is better and more detailed. For the original Omsi in Openomsi you just need the original omsi and openomsi. for london openomsi you need the original omsi and the london omsi and openomsi