DX3301-T0 WiFi keeps dropping (but router says its fine)

Just got off the phone with my ISP. they accessed the router via API and they noticed 1 discrepancy with the GUI.

1. I set up the router initially with 2 separate networks, one for 2.4ghz and 5ghz. they had different SSIDs, and i disabled MPro Mesh.

2. these networks wouldnt penetrate the whole house, so i switched back to mesh networking, and then installed some wifi extenders (tp link decos) but had to create a different SSID network for their mesh as they're incompatible with Zyxel's mesh.

3. So the zyxel is now back on MPro Mesh with 2.4ghz and 5ghz under one SSID. However my ISP reports via the API that Band Steering is turned off. This setting doesn't appear anywhere on the GUI though.

4. The ISP told me the API documentation says that the tick box under 'Home → Network Setting → Wireless → General → Wireless' that says enable same setting for 2.4ghz and 5ghz is band steering. This was enabled and greyed out because MPro Mesh can't be turned on without the networks being the same (SSID and password).

5. The ISP remotely enabled it via the API, despite it being ticked and greyed out. Perhaps this is where a bug in the firmware is located.

so i enabled logging on the router to check for whats going on and one of the times the wifi crashed and didn't come back on (sometimes it crashes and manages to relaunch itself) i found these WiFi logs - there's a separate 'Mesh' category but they didn't have any errors.

# Time Facility Level Category Messages1
Jan 14 20:43:28 user err wireless map_start: Wifi: map_process_start: socket recv timeout!!! Success2
Jan 14 20:42:43 user warning wireless syslog: Wifi: [WARNING] stop MAP processes!3
Jan 14 20:42:35 user info wireless zcmdModuleCfg: Wifi: Enable SSID(home-sweet-home)4
Jan 14 20:41:24 user err wireless map_start: Wifi: map_process_start: socket recv timeout!!! Success5
Jan 14 20:40:39 user warning wireless syslog: Wifi: [WARNING] stop MAP processes!6
Jan 14 20:40:30 user info wireless zcmdModuleCfg: Wifi: Enable SSID(home-sweet-home)7
Jan 14 20:40:27 user err wireless map_start: Wifi: map_process_start: socket recv timeout!!! Success8
Jan 14 20:40:06 user info wireless wifid: Wifi: Radio switch: 2.4G(0) 5G(0)9
Jan 14 20:39:39 user warning wireless syslog: Wifi: [WARNING] stop MAP processes!10
Jan 14 20:38:56 user warning wireless syslog: Wifi: [WARNING] stop MAP processes!11
Jan 14 20:35:46 user err wireless map_start: Wifi: map_process_start: socket recv timeout!!! Success12
Jan 14 20:34:59 user warning wireless syslog: Wifi: [WARNING] stop MAP processes!13
Jan 14 20:34:56 user err wireless map_start: Wifi: map_process_start: socket recv timeout!!! Success14
Jan 14 20:34:50 user info wireless zcmdModuleCfg: Wifi: Enable SSID(home-sweet-home)15
Jan 14 20:34:14 user info wireless zcmdModuleCfg: Wifi: Enable SSID(home-sweet-home)16
Jan 14 20:33:59 user warning wireless syslog: Wifi: [WARNING] stop MAP processes!17
Jan 14 20:33:51 user info wireless zcmdModuleCfg: Wifi: Disable SSID(home-sweet-home)

it looks like there's some memory leak / buffer overflow / other bug related to managing multiple access points. I've turned off the MPro Mesh feature for now yet kept the SSID's for 2.4ghz and 5ghz named the same thing. if this still crashes, i'll rename them to hsh-24 and hsh-5 and see if that resolves the issue.

I am also running a separate mesh network in a separate part of the house using other hardware (tp link deco p9s) but under a different SSID. These have their own firmware bugs too but these keep running fine. It's specifically the wifi on the zyxel router that drops and only that wifi that drops.

finally worth mentioning, the wifi SNR is pretty awful upon reboot despite it being on its own channel and having no inteference from other SSIDs on even adjacent channels. I get -50 to -60 (netspot goes 0 to -100) which is pretty bad considering its got direct LoS, same room, and is maybe 5m away. i believe this translates roughly ~ 20 to 25 dB. is this typical??