mobo reading ram speed incorrectly

[Bitoric]

so i recently bought and put together a pc its working fine but going through the task manager and shows its reading my memory info at 2133mhz.

Though i had bought the ripjawz 2x8Gb kit which is supposed to be 3600mhz.

A bit more info about the pc it has:

asrock b450m pro4 

2 8Gb ripjawz 3600

amd ryzen 5 2600

evga 600w bronze

geforce gtx 1650

I have checked the bios oc settings its showing the same speed at auto settings not sure how to adjust it to read it properly dont want to do it wrong and mess something up.

thanks for the help if you need any other info just ask.