Settings for Router-Client - sleep/display/etc

I have a T-Beam set up with 2.2.22 firmware. It is operating as a router-client. I had been using it with the meshtastic MQTT server but have turned off that feature thinking it might have been overloading the device and causing it to lock up. However it still seems to be going offline after a day or so. I don’t have much if any traffic in my area (I’m in a rural area with few nerds), so unless I’m generating traffic it sits mostly idle. I’m wondering if it is going into a sleep mode or something instead of just beaconing and waiting? It is connected to a USB source and I swapped the 18650 battery for a 3700 mAh pouch cell.

I’d like to keep the display on all the time and never go to sleep. The end goal is to seed a few router-clients in friend’s homes connecting to a local MQTT server, because there’s a lot of hills and it’s difficult to get long rage LOS unless you get up above 10,000ft.

Power settings (I believe these are all default):

Enable power saving mode: off
Shutdown on battery delay: 0
ADC multiplier override ration: 0
No connection BT disabled: 60
mesh SDS timeout: 0
Super Deep Sleep Duration: 4294967295
Light sleep duration: 300
Minimum Wake Time: 10