Yeah i agree that the problem might be the huge number of files. I am playing all day today with 100 roms on it and is working flawlessly, so a lot of files can't be handled right.
Thanks for the advices. I didn't know that i i ve to create a "SAVER" folder. My card came with no manual. I saw some videos and i noticed it and tried it myself. i did what you adviced me and now is working fine. But it seems to be struggle with all the library-romset even that i have them...
Please Help!!! I bought the EZ-Flash Junior and i am playing Wario Land but i can't save my game. Every time i reset my Game Boy i start all over from the beggining of the game! How does this card saves my progress in games?
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi