motherboard Ram/mobo issue

[The Imp]

Hello,

I've got a seriously complicated issue and I can't solve it myself, so some advise on what to do now would be awesome.

Aight, so about a month ago I build my first PC. However, when I got in the bios the first time I noticed that my ram was running at 2133 MHz instead of the advertised 3200 MHz. I selected an XMP setting that put it at 1.35V and 3200Mhz. I tried to restart the computer but it crached. I tried lowering it untill I got it to boot. that was at 2733 Mhz I think. 

Problem was that I regulary got BoDs or just no input on my monitor, also when this happened, my fans would start spinning like crazy. 
Eventually I realised that the only way to prevent these crashes was to set my RAM back at 2133MHz, which really sucks. I am getting the feeling that this issue comes from my motherboard.

i have a 

-Asrock b450m steel legend

-2x8 Gb Geil Super luce RGB ram 3200

-ryzen 5 2600x

-AMD radeon rx 590

 

If anyone has any idea please let me know, thanks!

 

PS: I have tried overclocking the ram to a higher clock speed than 3200, but so far no good.