Tested Rollcage, Legacy of Kain: Soulreaver, Spyro the Dragon and Alien Trilogy with the frame boosting AFMF2 tech. The results were... mixed. When AFMF works well, it gives what seems to be smooth 60+ FPS, but this typically works from a 30 FPS base that Duckstation puts out at 60, so messy.

Spyro and Alien Trilogy worked well, and they generally felt like I was getting a good 60 FPS in most cases. This is kind of what I always wanted with Spyro since I could upscale it. Alien Trilogy works well as an FPS with 60 FPS is a good match. Weirdly it felt like I had stick drift, but on a dpad