Compared to TSW2 it seems that the steam engines lost some power and can’t keep up the pressure if you try to boost it. In TSW2 I could easily go 20 mph up the hill from Liverpool Lime Street. In TSW 3 I barely reach over 10 mph. This is with the heavy express train to London Euston. Is it a known issue and will it be fixed?
Link to the thread regarding this. Last I read, dtg is still looking into it https://forums.dovetailgames.com/threads/tsw-3-spirit-of-steam-pressure-problem.58845/