9260 on my ubuntu 18 running the most recent linux kernel and most recent intel 9260 drivers. My 5ghz is terrible with a huge amount of tx errors. How fix it?

[jfree9]

I have a 9260 on my ubuntu 18 running the most recent linux kernel and most recent intel 9260 drivers. My 5ghz is terrible with a huge amount of tx errors.

https://pastebin.com/pVNFL5qv

[jfree9]

https://pastebin.com/xVmSb9NG

[jfree9]

I've found that the issue has to do with encryption on 5ghz. If I turn off the router encryption, and DELETE the local linux wifi profile for the encrypted network and then connect without encyrption, I get great speed.