Maybe they will fix it through a patch. I do think they would have added a performance mode on the switch that lowers the res while docked to 720p and have it be 60fps assuming the gpu is the bottleneck.
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850