I don't know the xbox very well but your GPU is a custom one with a benchmark score of around 4 Teraflops.  For comparison in the PC world an RTX 3060 which would be the lower end recommended for Trainz has a benchmark score of 12.7 Tflops.  It could be the route is designed for an XBOX series X.
I don't know the interface for XBOX but if you're lucky you can see trainz settings, set them all to minimum, in driver three bars, video settings set them all to the left, you can increase them gradually if need be.
Realistically many will run things like a refurbished Dell 5820 workstation with an RTX A4500 20 gig video card.  Cost around $1,200 US but you'll need a copy of win 11 workstation on top of that and a monitor.
I'm not even sure if you have access to the DLS or only packaged routes.  If you have then try Middleton for laptops.
Cheerio John