FWIW 3910 on 4.3.1.1 and 2962 on 4.3.1 it doesn't appear to allow me to use a load-balance rule to force a specific subnet out as a different WAN Alias IP - the rule applies but I intermittently get no connectivity. As soon as I disable the load-balance rule it works fine.

On the 3910 I also had issues with a location where after updating to 4.3.1.1 where there was no packet loss but inbound connections (i.e HTTPS) would frequently (but randomly) lose connectivity. I had to drop back to 3.9.7.2 to resolve that.

Didn't have any of these problems on 3.9.7.2 so I assume it's one of the reasons why 4.3.1.1 hasn't seen a full UK release. I hope this is on the roadmap on for the next firmware release.

FW 4.3.1.1 - getting issues with the router crashing every couple of weeks (or less) with no routing and cannot access the device with a direct connection to port 12. The only remedy is a manual power cycle (remove plug!)

Not seen in versions before 4.3.1. Working theory is either memory leak, or malformed packet. There is nothing in any of the logs to indicate anything unusual. It just locks and crashes.

DrayTek used to be good at firmware…..

Not that I'm doing anything fancy with it AT ALL but I've had great success with 4.3.1.1 really stable and no problems noticed
(I do accept that it's probably just that my simple usage hasn't hit a code path that has memory leaks or problems but just noting it as a data point)

Model Name Vigor3910 System Up Time 679:21:20
Router Name DrayTek Current Time Tue May 31 2022 20:19:38
FW /Loader Version 4.3.1.1/v22 Build Date/Time Apr 19 2022 12:44:36

System Resource
CPU Usage:

1%
Co-Proc CPU:

1%
Memory Usage:

79%

Seems to be related to Wireguard VPN. I have six LAN to LAN running and the memory increases by about 1% each couple of days with no change in number of users, devices or system changes. Will keep monitoring.

4.3.1.1 running here on 4.3.1 still had issues where if I made any changes to the bind ip mac address and didn't reboot the devise a few days later internet access would cease needing a reboot. So far so good with the latets version.

For info - 4.3.2 RC3, router has crashed twice with this RC, runs for a few days then stops responding and internet is dead, gone back to 4.3.1 (4.3.1.1 wasnt good for me either).