@darth @darth Hello!
I also had problems with the PSP emulator on RPi3 (Recalbox version 18.07.13), and I've seen other reports about that, the "temporary solution" I found was:
- If you're using a 1080p theme, you need to change to 720p
- In addition, in the folder "\share\system.emulationstation", in the es_settings.cfg file, find the line "<int name =" MaxVRAM "value =" 200 "/>", and change the value from 200 to 80, getting: <int name = "MaxVRAM" value = "80" />
- go to the folder \share\ system, in the file recalbox.conf, find the line "dreamcast.videomode =" and add just below it the line: "psp.videomode = default" (without quotation marks, obvious)
- You can do overclocking, this will improve performance, but as there is a risk, not everyone likes to do, so this is your choice, I can not hold myself accountable.
With this, the PSP emulator is able to work most of the time, and if the game does not enter immediately, just wait a bit, and try again, the game will start. I know some people do not like this solution, but that's what solved for me.
This is not a definitive solution, you can expect the next version for a real solution, as @paradadf commented.