I just joined as I came across this thread while searching the web.
I’m having similar problems with my switch, both in handheld mode and when docked on my 65” OLED.
Whenever I play my eyes feel strained within 5-10 minutes, almost like they are incredibly tired. They actually start to hurt moving them after playing for 15-30 mins.
I’m a moderate gamer, played PC games for years and play both PS4 and XBox frequenly right now without issue. I also use a laptop, iPhone and 34” monitor daily without issue.
What in the world could be causing this?
Also, just to add. I have crappy eyesight but have worn glasses for years. Corrected my vision is sharp and just had my prescription updated earlier this year. I’m also playing in a bright room.