When setting off (speed selector at 0.5) after stopping at a station the train seems to jump straight from 0 to 8km/h and with head sway on you are thrown backwards violently. I've only had this issue since the release of rush hour.
Same here on PC and PlayStation: https://forums.dovetailgames.com/threads/arosa-ge4-4ii-insane-acceleration.44684/
+1 I find Arosa unplayable ATM. It's a shame because I liked it quite a bit. Rivet games confirmed they know about this issue about 3 weeks ago but nothing has happened since.
I can confirm that this happens on PS4 too and because physics can be weird sometimes when I applied a little bit of traction it jumps from 0 to 10 kph in half a second and… I derailed I thinks some of the physics were broken since the Rush Hour update but because it acts weirdly now I’m not playing this route anymore