Thank you! Now it’s working
It was in the menu as a core you could load so I assumed all files were already there, but I had no pcsx2 folder under system.
Got to try Baldur’s Gate Dark Alliance, once you were out of the tavern things ran almost full speed, but something in the tavern completely tanked the fps.
just a few tips, stay at 1440p or below. standard Retroarch settings make it so that retroarch itself runs at and outputs 1080p anyway, if you wanna go above that you have to enable 4K support for Series consoles.
if you wanna have 4K output enabled go to
Settings > Video > Fullscreen Mode > Force Resolution on UWP
and if you have slowdowns that you think are slower than the original game speed, try setting the "enable speedhacks" option, maybe set it to balanced or aggressive. balanced should work for most games, agressive can give issues, but it's worth a try
(remember tho, PS2 games also had slowdown on original hardware, so sometimes that's just how it is)
edit: also what is important to note, the way this UWP version of Retroarch saves settings can be irritating at times. I mentioned this in the OP tutorial, but if you change Retroarch settings, always go to
Main Menu > Configuration File > Save Current Configuration and then close Retroarch and restart it. only then will you be sure that it actually saved all your changes.
if you change settings in a game, always scroll to the top of your settings and there click on the game options file and save it. if you did that once the emulator will have a settings file that always updates AFTER you close the game. so if you change settings in a game like Resolution and stuff, make sure to close the game inside retroarch.
it will save immediately the first time you create a game options file. in older builds you could manually save each time, but they changed that for some weird reason
closing PS2 games can crash retroarch 1.9.5 and older on Xbox, which can be annoying