I need to buy a new monitor with hdmi 2.1 to use this feature, so maybe next month

It's in my son's room, so just an old 40 inch, 1080p/60Hz. Due to way it's positioned and furniture, I can only put up to 43 inch there, and I'm having problem finding 120Hz VRR HDR 43 inch TV at reasonable price, so I guess I'll keep looking.

Yep.

4K TVs seem to be one of the things that got ridiculously cheap in the past 10 years, like 1/4th the price of a much smaller 1080p TV from 15 years ago.

I will have to admit I am absolutely 100% fps obsessed. MP4 at 120 fps is 10x better than at 60 fps. I love the speed of controls at 120 fps. I game exclusively (when possible) at 120 fps.

4k yes. 120Hz no. VRR I think no, but information on the specs is contradictory (official website says it does, manual says it doesn't). Not that it would be too useful at 60hz anyways...

Yup. I upgraded my TV in late September 2025. My brother already had an OLED TV for almost two years at that point. I loved how the picture looked, so I was convinced to buy a new one for myself. My old TV had a good run. It lasted 9 years. It still works, though. It belongs to my parents now.

Yeah I also recently upgraded to an OLED, modern games especially look fantastic on it with deep black, bright highlights, and bold colours. 

It cost me $1000AUD, but it was worth it. (It was after all a $2000 TV on clearance at half price)

True...unless you have specific restrictions, like like myself, in which case 120Hz VRR 43" TV with HDR and at least 800 nits costs about the same (or more) than 55" with same specs.

No, still got my KS8000 from 10 years ago.

The switch 2 is not a PC where you can change settings. I would assume the fps would be erratic trying 4k, upscaling is never perfect. Secondly, for 4k you have to go into the switch 2 settings.