2.4 and 5 ghz dual band

Hi every one
i’m from new caledonia and new to mikrotik products. and i first want to apologize for my english.

I’m trying to set a dual band 2.4 and 5ghz wifi on a metal 52ac AP for one of my custommers I have firstly installed a sh2pn but i had several issus with apple products that could not connect more than 65 Mbps.

Can you please help me ?

Don’t quote me but I thought on that model it was either 2.4Ghz or 5Ghz. Not simultaneous.