So... i haven't found that many bugs and problems other then:
1. AI Pathseeking. the ai tractors don't really seem to be consistant and often fall off my roads.
2. AI Driving. The ai's driving (mostly acceleration) is terrible and almost alltime does NOT keep the same speed as i recorded and can therefor launch itself up for ramps and fall off edges because of high speeds.
3. Multiplayer lag. (this is self explanatory) inputlag, and frame lag
4. Multiplayer joining. so i spent 30minutes trying to get into my friends lobby but it kept crashing attempt after attempt it just kept crashing or took way to long.
5. Vehicle collision. so when vehicles collide they fly away as long as there isn't anything to stop them like a wall or mountain
that's my summary hope it helped :)