Help with Forza Horizon 6 Performance

Hey - curious if anyone can help out with some performance issues on Forza horizon 6. ROG Ally X (non Xbox). 8gb vram dedicated. 30w custom.

I’m getting <25fps and temps up to the 80s C, despite AFMF, everything set to performance, low to zero reflections, no ray tracing.

Id chalk it up to a handheld issue if it wasn’t running significantly smother on my steam deck (plus people seem to be reporting much higher fps online)