From what I've seen from YouTube videos, performance looks fairly good. Unfortunately, the 153 has the sound popping issue, and some Zfighting cab textures.
I bought it on XBOX Series S a couple of days ago, played a few services. Runs no better or worse than Blackpool Branches and WCML Preston to Carlisle. You will get the usual hitches and frame drops in busy areas, but nothing game destroying. This route has a reduced timetable for XBOX Series S, Playstation 4 and XBOX One.
Go and watch the YouTube preview video. Jamie specifically said that the XBOX Series S has a reduced timetable to improve performance. DTG Jamie DTG Alex DTG Alex would be greatful if one of you guys could confirm please.