Fingers crossed but after update to macOS 12.1 beta 4 I have no issues with a card I had problems with before. I keep testing. Anybody uses a beta channel, please do some tests.
Edit: Another SD card (JetDrive) no issues so far as well. Also Disk Utility is quick now. It was very slow before for me.
Edit2: Had 1 short pause during copying to JetDrive and write speed dropped from the usual 60 to 40MB/s for that drive. But it's old and almost full maybe that's the reason. Anyway, still no errors.
Edit3: Reading is stable on a full speed for that drive ~90MB/s. I do not have UHS-II cards to test maximum speeds.
Final edit: Yep, no issues for me. Tested two drives I had issues with before. Write/read speeds are according to specs for those drives. Looks like they did it. But let's wait on comments from other folks to celebrate it.