Company VPN client disconnects every ~50 seconds

Hello, my company uses globalprotect and it was working consistently until about 3 weeks ago when I'd get disconnected every minute. 

The globalprotect client logs show this message when the issue occurs:

P1185-T31771 04/26/2025 07:09:14:014 Debug(7710): NetworkConnectionMonitorThread: Detected route change, but skip network discovery.
P1185-T259   04/26/2025 07:09:14:015 Debug( 356): receive sig 20
P1185-T19779 04/26/2025 07:11:10:485 Info (1354): --Too many outstanding keepalive and no response from GP gateway, disconnect tunnel
P1185-T19779 04/26/2025 07:11:10:486 Debug(1357): Tunnel downtime after keep-alive timeout is 54167 ms
P1185-T19779 04/26/2025 07:11:10:486 Info ( 631): VPN timeout due to keepalive, get out of ProcMonitor
P1185-T19779 04/26/2025 07:11:10:486 Debug( 647): In timeout handling, tunnel downtime is 54167 miliseconds
P1185-T19779 04/26/2025 07:11:10:486 Debug(6030): Show Gateway COMPANY_PORTAL_ADDRESS: Checking network availability and restoring VPN connection when network is available.
P1185-T19779 04/26/2025 07:11:10:486 Debug(8110): --Set state to Restoring VPN Connection

This will occur in a loop of connecting and reconnecting every minute and makes doing work impossible.

I have tried

• improving the performance of my connection from the modem to the street
• enabling bridge mode - I use a 3rd party router. Nothing has changed about this router in about a year
• disabling the firewall
• never enabled advanced security
• connecting an ethernet cable to my laptop from the router and using a wired connection

Things that reliably works is to

• Go into the office and use my company network (ATT)
• Use my company's deprecated VPN portal. This is going away soon so I need a fix
• downgrading my Mac's globalprotect client from 6.x to 5.x
• using openconnect client on a linux machine on the home network

Given all these things, I'm pretty sure there's some interaction between the network and the VPN. I could use help so I can continue working from home.

Here's some examples of the dropped connections while connected to the VPN

Apr 26 07:10:16 64 bytes from 172.31.50.243: icmp_seq=101 ttl=63 time=33.731 ms
Apr 26 07:10:18 Request timeout for icmp_seq 102
...
Apr 26 07:11:26 Request timeout for icmp_seq 170
Apr 26 07:11:26 64 bytes from 172.31.50.243: icmp_seq=171 ttl=63 time=39.203 ms
...
Apr 26 07:12:34 64 bytes from 172.31.50.243: icmp_seq=239 ttl=63 time=47.117 ms
Apr 26 07:12:36 Request timeout for icmp_seq 240
...
Apr 26 07:13:47 Request timeout for icmp_seq 310
Apr 26 07:13:47 64 bytes from 172.31.50.243: icmp_seq=311 ttl=63 time=29.443 ms

While I'm not connected to the VPN, my pings are stable.

Arris TG3482G is my modem. Also I re-opened this thread after it was merged with an issue I previously posted about network jitter since this appears to be a different issue and I don't want this to be buried.