I see a couple of bad config settings but I'm just going to brute force this...
Close Dolphin, go into Documents/Dolphin Emulator/Config and delete dolphin.ini and gfx.ini
Reopen Dolphin. Don't change any settings. Go and boot Symphonia. Does it work?
If it works, go into Graphics > Enhancements and turn up your Internal Resolution how you like it (I don't recommend anything higher than your display's resolution, so if 1080p, 3x)
If it does not work, try Direct X 11 and Direct X 12. Does that work?
Close Dolphin, go into Documents/Dolphin Emulator/Config and delete dolphin.ini and gfx.ini
Reopen Dolphin. Don't change any settings. Go and boot Symphonia. Does it work?
If it works, go into Graphics > Enhancements and turn up your Internal Resolution how you like it (I don't recommend anything higher than your display's resolution, so if 1080p, 3x)
If it does not work, try Direct X 11 and Direct X 12. Does that work?