RAM Speed issue?

[AetherCLion]

So i don't know what is causing this but recently i updated my PC to windows 1903 and idk if that update caused my system to run slower but my PC RAM 8xGB (16) GB HP Memory DDR4.

Before it was running at 2133 instead of 2666, okay no problem there, but idk how my ram came out from a vibration or something but now after seating it back into place both DIMMs run at 1333MHz and the BIOS is up to date and i haven't changed the BIOS. so wtf is causing this. it was perfectly fine before. 

oh and i did RESET CMOS okay.

motherboard Asus prime A320M-K, Ryzen 5 1400 

[TrigrH]

show screenshot proof that its running at 1333mhz.

[AetherCLion]

7 hours ago, TrigrH said:

show screenshot proof that its running at 1333mhz.

 

[TrigrH]

32 minutes ago, Specter FXXK said:

 

yeah DDR is double data rate thats 2666.

[AetherCLion]

why is it running 1333MHz instead of 2133, that is what my system ran before.

 

[AetherCLion]

okay Windows 1903 is causing a weird bug or issue with RAM, i fixed it reverting back to 1809