I have a similar problem.
Donky Kong, Crashbandicot, Darkest Dungeon, Megaman, etc.
If necessary, I split the file into 2-3 files.
I see the icon but when I want to load it I get the message that the card cannot be read.
I am on firmware 3.0.2, SX OS 1.3.
SD: SanDisk 128GB (Sandisk 32GB other model), format: Fat32
I've formatted the card several times, swapped cards. Files downloaded again
All files were downloaded here and unpacked with 7zip.
What surprises me is that e.g. MarioKart, Marvel Superheros, Xenoblade 2,Mario+Rabbids work.
Would be grateful for any help