Rax80 smart connect issue wifi dropping

I am having this same issue. I disabled the Smartwifi (2.5 -5ghz auto switching). It got better. I did notice another poster in this thread was soley in Access Point (AP) mode. This is how I keep my configuration. I wonder if this issue hasn't really been uncovered because the primary use for this is in router mode. I still get issues with my RAX80 AP just dropping. Its like the AP stops working and reboots and disconnects all clients. On my phone Ill attempt to reconnect but it will give me a "password incorrect" error. I will enter the correct password (even though its stored in my phone) and it will still give me the error. I will go and reboot the AP and once it comes back up everything reconnects back to normal with no issues. I ran wifi analyser in my house and while the 2.4 ghz network is slightly congested, the 5ghz is virtually wide open and my 5GHZ has its own channel. with no others nearby. 

I am running V1.0.1.64_1.0.27 which is the latest version I have automatically avaialbe from my router's software (as of 09/29/2019). 

Also, a side issue, when I attempt to configure my 5GHZ from long preamble to short preamble, the configuration will not save. The 2.4Ghz network applies and saves just fine. I have done this serveral times. I have attempted this before and after a restore