alll risers support 3.0 (x1). well if motherboard support only 2.0, than the riser will do 2.0 as well.

Holy shit that worked!

Above screenshot is from Asus PRIME Z270-A.

And a screenshot from HIVE OS after running gen3 for the last 20 minutes with no issues:

I have 6 rigs with those mobos, so hopefully they will take to gen3 fine as well.

I have the same mobo. I can't find a way to change to Gen 3. I tried in the tool menu of bios.