Not to ask your question, but if you use emulated MC, why do you want to use your physical MC?
Because my GameCube still works?
And also because it's still not clear if it's purely an issue on my side or if it's an issue with Devolution itself.
EDIT: Oh, and the flash drive I use isn't big enough to hold all my GameCube games, so I still play from the disc from time to time. I could use an external hard drive, but I only have one and it's purely for archival backups, so I don't want to use it frequently and have it fail on me. It also requires a power outlet, so it's not very portable - heck I think said hard drive is heavier than the Wii is.
And to clarify, my memory card is large enough that it can hold all the saves for all my GameCube games, so it's extremely convenient to just have all my saves in one location, which also makes it super-easy to backup and/or dump my game saves since I can just do a raw dump of the entire memory card itself and use it in Dolphin and/or Devolution without converting anything.