@TD-er: So, have been running with the version you posted on 23 Aug 2019, 12:51. Unfortunately, I'm still seeing watchdog reboots every 1-2 days.
Currently the version that has been most stable on my devices (12 pcs.) is mega-20190817 (9 days and still counting) and mega-20190121 (also 9 days).

I see the complexity. It could be a feature that was not enabled by default, but instead something that people could enable in the advanced settings, with a short explanation in one of those (Info) icons that are used elsewhere in the menus. I'm not sure how often wifi channels change (if at all) on...

That is some really impressive optimisations. I thought it was faster already, but apparently it can be tweaked even more. I can see that being very interesting indeed if people wanted to build i.e. a window or door sensor, based on a reed switch powering up the device from a battery, when needed. W...

Thanks, TD-er.
I have now loaded it onto one of my modules and will post back with my findings. One thing I noted already is that it seems to be even faster connecting to the Wifi after boot (static IP).

I'm not seeing an SSID for my modules. They have all connected successfully to my wifi and switched off the SSID. I normally get 0-2 days uptime on my modules between reboots, but the 20190817 release is currently on 4+ days, however the change log does not really show any changes that would explain...

Any new updates on this topic? My devices keep rebooting with a maximum uptime of 1-2 days, running the latest releases.