RS500 MLO Support and 320MHZ?

For my new rs500, I cannot get 320.  Best I can do for 6g is to set it to up to 2.9gbps and it will get to 160.  No other combo of channels/speeds works to get 320.  My ASUS router has no problem doing 320 for 6ghz.  How can I get this rs500 to work at 320?

Also, there seems to be no support for MLO...one of the biggest benefits of wifi7.  Again, my ASUS router does that without issue.  So far very disappointed in this Nighthawk.

Hoping someone can help...at least the 320, which it claims it has.