12 minutes ago, Bush Badger said:
The model number is HX440C19PB3AK2/16, let me know if you need more info
So it looks like this kit uses Hynix / Micron memory ICs.
XMP timings for 4000 MHz is 19-21-21-42 1.35V.
Not the best kit out there...but not the worst either...
Have you tried enabling XMP, so the proper timings are set, BUT then manually change the memory multiplier / ratio to DDR4-3400 or 3600?