Problem with adding another 2 sticks

[stolica]

I have problem with adding another 2 sticks of 8gb RAM. Already I have two of 8GB RAM sticks G.SKILL Aegis 3000MHz, but after adding another two, wich give me 32GB RAM, it's crashing computer after couple of time in games. After crash it's reseting my BIOS settings, and turning off XMP profile. What's interesting, when i have XMP profile off, it only shows 16 GB RAM 2133 Mhz, not 32 GB that i added yesterday.
I tried lowering RAM to 2933 MHz, because i thought it's because of 3000MHz, but it still don't work. I wasn't improving voltage for RAM in BIOS, can it be a problem?
Maybe problem is that it's not compatible with my Motherboard?
I'm 100% sure i bought the same models of RAM, so it can be problem.

There is my specs:

Motherboard: B450 Aorus Pro
RAM: 4x8gb G.SKILL Aegis
CPU: AMD Ryzen 5 3600
GPU: Gigabyte RTX 2060 OC Windforce
Power Supply: Vero L2 600W
Motherboard: B450 Aorus Pro
RAM: 4x8gb G.SKILL Aegis 3000 MHz
CPU: AMD Ryzen 5 3600
GPU: Gigabyte RTX 2060 OC Windforce
Power Supply: Vero L2 600W

[GSKILL TECH]

Do you have the latest BIOS? Did you test each pair / kit to see if they can work well?

Ideally a single 32GB+ kit should be used o replace the existing memory. There is no guarantee two separate memory kits can work together, especially if purchased years apart.