Question Ram wont run on 3200mhz. but runs +-100mhz ?

Tibi__

Honorable
Jan 2, 2016
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Hello
i got a 12900k with asus z690 A d4 motherboard.
i have a know good trident z 2x8gb 3200mhz ram kit.
if i set xmp it does not post at all. if i set manually still does not post. so i tried to lower it to 3100mhz and it does work. also works with 3300mhz. voltage bumped to 1.37 instead of 1.35.
also disabled fast boot, so it has more time to train mem.
what can this be?
 

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