Counterfeit Sandisk SD cards ?

[CaSiMiR-55]

Hi !
If I understand the last release (1742) addresses a compatibility issue with counterfeit SanDisk SD cards.
I bought 2 sandisk 64Go cards in china, but they don't work with Swiss. I format them several times (FAT32, ExFat) : sometimes I have "no Ipl found" on boot, sometimes it boot, it's very slow and it crash when i try to launch a game.
The cards have been tested with CrystalDiskMark and they seem to have correct transfert rate. But maybe they are counterfeit SanDisk SD cards (they were very cheap...)
What could I do to activate the compatibility with counterfeit cards ?
I have a DOL-001 with picoboot v0.4 (the last release where there is no need to bridge pins GP6 and GP7) and a SD2SP2.
Thanks a lot for your help.