I searched the forums for anything similar… and came across a forgotten post of my own. Lol.
AMD 7700s dGPU DP issue with 4k@60-144hz (updated title) - Framework Laptop 16 - Framework Community
In that thread I state that I was having performance issues with outputting via the dGPU’s usb-c port (though, in that thread I was outputting 4k, is this new testing I also tested 1440p and 1080p). I’ll test using the mobo connection per my own suggestion tonight, although I had specifically wanted to use the dGPU port for the decreased latency.
If I find that the FPS loss only happens via the dGPU port… that would seem unusual to me.