Thank you so much for this, OP! I'm very grateful
Here are the results of what I've tested to see what works:
Edit: ( I would check the ones that outright crashed again, because I'm noticing after some rechecking that some that worked before might not a second time, and I'm thinking the issue there is maybe my loading multiple ISOs in succession to test them, which I did the first time, too. I might go back and recheck the ones that crashed outright.
It's also possible I'm misunderstanding what I'm seeing. The game that is giving me trouble is ffvi. It worked previously as seen below, but is failing to load now. Reset the Wii u after and tried again. Failed to load again and now the next game I try will crash the Wii u. Same with ffiv)
PoPoLoCrois monogatari ii (English patch) - no audio in opening movie. Failed to save. The opening text stays on the screen instead of going away. Future text overlaps it. Plays fine if you can ignore the permanent onscreen text
Brave Prove (English patch) - works fine. On exiting however it says "failed to save game"
Community pom (English patch) - runs perfectly. I got sucked into this one and the game crashed about an hour in. Had saved within the game, but it didn't take. Says "failed to save" on exit
Dr slump (English patch) - runs fine. Says "failed to save" when I exit
Echo night 2 (English patch) - unplayable. No button input and screen is in the upper right corner and shrunken
Harmful park (English patch) - plays great. Failed to save
Langrisser iv (English patch) - works perfect. Failed to save
Mizzurna falls (English patch) crashes. Unplayable.
Moon (English patch) - works great. Failed to save game
Bomberman fantasy race froze after a race. Both game and emulator are on a 128gb SD card. Screen froze, but if I pressed buttons the sounds associated with them were registering, just not reflected on screen
Otherwise it looked like it was playing perfectly
Tail concerto - no issues aside from the input periodically sticking
Tactics ogre let us cling together - no button input and can't press home. But graphics not frozen. Unplayable
Suikoden 2 is great. Fps hovers around 53
Suikoden runs perfectly, but I didn't try a fight
Strider 2 is perfect (this game is awesome)
Strider works fine
Street fighter ex2 plus - fps is about 45-50. Audio stutters. Playable
Street fighter collection 2 - seems to be perfect
Street fighter alpha 3 - perfect
Star ocean second story works perfectly, but I didn't try a fight
Sim city 2000 - black screen. Unplayable
Saga frontier 2 - opening scene of a battle is warped, like it's at a diagonal it shouldn't be. Also crashed as I was running around
Saga frontier perfect
Rpg maker is perfect
Ride racer revolution works fine
Rhapsody - magical melody. Takes a long time before you can control the character beyond when you should be able to. Seems to be on screen transitions. It just stands there and button inputs don't register for awhile, but the music and animations continue. Moved to the second screen and same thing. It's "playable" technically, if you're really patient.
R4 - ridge racer type 4 works perfect
Mortal Kombat trilogy works great
Monsterseed works perfectly
Misadventures of Tron bonne - graphical issues on the right side on loading. Voice acting garbled. Game itself plays fine. I stopped before the first boss
Metal gear solid - somewhat garbled audio during the opening cut scene. Game itself plays fine
Mega man X4 works great. Only thing is that the text is a little overly spaced out. That might be a thing with the game itself though. Has no impact on ability to play
MegaMan legends - crashes, doesn't load. Says (dsi) exception or something similar
MegaMan 8 plays perfectly
Lunar eternal blue - there's a speed thing happening that's messing with the text, audio and graphics. Things are going way too fast. I wouldn't consider this really playable, although technically you can if you're okay zooming everywhere. Battles are normal speed
Lunar silver star story - movies are off center. The game itself is centered properly. But on opening the menu the screen goes black. Button inputs still work, but you can't see what's happening. Unplayable
Legend of Mana works great, but I had one instance where my Wii u crashed while in game. Loaded it up again to try to replicate it but couldn't
Legend of dragoon works great
Koudelka - audio and graphical bugs. Fps hovers around 53-54
Jade cocoon - no issues. Fought the first battle
Grandia - Voice acting in the opening scene is weird. Not synced all the time, sometimes repeats or overlaps on itself. A little bit of freezing when "Grandia" appears in screen in a new game. Seems fine otherwise. Didn't try combat
Incredible crisis seems to work perfectly
Legend of Legaia works well. But I didn't go far enough to try combat
Knockout kings 2001 runs at about 35-45fps. Not great for a boxing game. Playable but not what I would call Very Playable
Knockout kings 2000 plays totally fine. Didn't see any issues
Klonoa door to phantomile - movies run great, audio fine. Game runs at about 45-47 fps. Still totally playable
King of fighters 99 works great. Minor fps slowdown
King of fighters 95 works great. Didn't see any issues
Guilty gear - fps varies from between 40-50. However, it's playable
Gran Turismo 2 has very long loading times right now. I wouldn't consider this playable.
Gran Turismo 1 works perfectly
Ergheiz runs at about 30 FPS. Audio stutters too.
Einhanders fine. Graphics, audio, fps, all good
(Tried a couple romhacks, hopefully but not optimistically - legend of dragoon bug fix version crashes my Wiiu. Gran Turismo 2 combined disc version doesn't load)
Front Mission 3: fps is fine, audio is fine, but graphic issues during combat. Robot disappears at times, textures on the ground disappear at times
Final fantasy VIII - stuttering audio and between 35-45 fps on opening. A lot of small freezing at regular intervals during the first movie, but fps doesn't seem to dip. The game itself appears to play fine. Made it to where you can walk. Didn't try combat. Looks like in any movie there will be those regular short freezes
Final fantasy vii plays totally fine. Minor FPS dip on opening.Didn't see any issues. Did the first fight, watched the opening cut scene
Final fantasy tactics - fps drops to 50 at points, but it's a turn based strategy game, so it has no/minimal impact on enjoyability
Final fantasy ix appears to play perfectly. Cut scenes are fine. Did the first fight. Everything's swell
Final fantasy Chronicles IV seems to play perfectly. Didn't make it to a combat section
Final fantasy vi - works great except for kind of long screen transition times. Not sure if that's inherent to this port of the game, however. Didn't test combat
Echo night works perfectly as far as I can tell. Got as far as where it asks you to crouch and I couldn't figure out how
Driver 2 works great
Darkstalkers the night warriors players perfectly
Chrono trigger - works great, just an odd bit of loading time getting in and out of menu screens, and going through doors
Final fantasy anthology - ffv: audio cuts out. Seems to play fine otherwise
Darkstalkers 3 works great.
Chrono cross - going into battle the fps can drop to about 20, albeit briefly. Seems to be just for the first battle. Battles after that first don't have as severe a FPS drop. It's fine otherwise
Bushido Blade interestingly won't launch with two controllers connected. Launches fine with just one. Plays fine
Bushido Blade 2 works great. Some minor audio stuttering. Also won't launch if a second controllers connected
Bomberman party edition works perfectly, no issues.
Castlevania symphony of the night runs great. Beat the intro boss. Whew, that voice acting is cheesy
Driver You are the Wheelman: works great. I didn't get past the first mission, though
Bomberman World runs perfectly. Little freeze frame-y looking on the start screen, but I think that's probably inherent to the game itself. Played a round
Bloody roar II, fps is about 30. So music stutters a lot.
Alundra works fine, however load time on entering doors is a little long, to the point that you might think the game froze
Alundra 2 works perfectly as far as I made it. Cut scenes fine, got to the combat areas, combats fine.