Hi Brycesor,
For your question bios/firmware update, I never update it.
I tried your 1st solution and I see now that I succeed to connect to my router using the 5GHz, but the speed is very slow, a simple page take more that 5 minutes to display.
I tried the after that the 2nd solution, but the same behavior: very slow connection.
I also reinstall the driver using the intell software, but the same status
to summerize, the network reset allow a succefull connection but still connection not usefull due to a strange very slow speed issue.
Note before I do your solutions I have already tried the solution proposed by SteveTaylor_1 but it give the same slow speed issue (so I revert the change before doing your solutions)
So I still have the issue.