can RT-AC87U log show outgoing packets order/time?

[Uri]

I want to investigate RT-AC87U's MU-MIMO behavior, and for that end I wish to see the order in which the outgoing packets are sent.

This could be easily achieved by sniffing the wifi in a regular case, but when doing MU-MIMO I suspect I will only get garbage (I don't have all the components for the testbed yet, so I haven't verified this assumption yet).

Can I somehow get this information from the router? maybe a log file which contain this info? or maybe install a different firmware which will allow it without losing MU-MIMO?

Thanks!