I mean old like Sega Rally Revo. This is not my video, but it sums up my experience playing in deck. The graphics doesn’t feel too old when compared to today’s games and I’m not sure why but I always get above 100fps even i limit deck settings to 60.
Yes, although I’m mostly playing games 4-8 years old. I have a lot of great games I missed during that period, and they both feel modern and run pretty well.