Pretty simple SDoled running great in handheld mode as soon as I dock it, it slows everything down to the point games are unplayable. Also not playing graphically demanding games Melty Blood, Street Fighter collection, and Skull Girls. I’m not the most tech savvy guy so I’ve tried the basic like powering on and off hard reset even did factory reset don’t know what else to try.

Also was working fine earlier just started happening out of nowhere. Thanks in advance all advice is welcom.