First of all, many thanks for the new route between Bremen and Oldenburg, which has become very interesting. But unfortunately I also have a very bad performance on the Playstation 5. In addition to the regular stuttering, it looks like small frame rates even during normal driving (especially in Munich and now here in Bremen). this is much stronger in the cockpit view than in the external camera. The graphics are particularly slow in the cockpit view and full zoom through the front window. let me know if you need any further information.
When I saw the live streaming showing this route for the first time by DTG, it payed my attention, there were several stutters when running though the route. If you have PS5, and are suffering even more issues as you mentioned, then me as I have PS4, then not be a good choice to buy it.
Stay away from it and all routes on ps5 poorly optimized. I tried a route once in a rain storm omg 24fps
Saw a lot of Gameplays of BRO on a PC. Very poor performance with the foliage popping in about 30 meters in front of the Train..... No way this would perform on any acceptable level on my PS4.