Curious how well the RP4 handles some of the heavier PSP games, but nothing specific.

I'll download Star Allies, I played TOTK and it ran okay - could probably do some more tweaking for steadier performance, however I didn't download any of the update patches, or the mods - there is a 30FPS and 60FPS mod.

Using the settings I listed in the OP. I was getting a solid 30 in cutscenes, and between 26-30 in gameplay, the dips appear to be when stuff is loading because it normalizes after a second, maybe more playtime would allow caching to smooth that out?. I turned off speed limiting in the emulator (which I previously hadn't done) and I was getting a solid 70 FPS. It also makes the game run faster than normal so that's kind of silly to watch.

I have not, I'll download TOTK and let you know how it goes.

Silicone?

I did for awhile because there’s nothing else to do in the game