I have R4 card too. The interface of this card is not good. Can DSTWO kernel or interface be thrown into this card? How to do if thrown. Kernel is not important. It could also be the interface.
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