The router is a Sagemcom B-Box 3 running the ISP's software. It does not have user-accessible logs but I can see what devices are currently connected. When the computer loses internet access, it still shows in the list of connected devices, as I would expect.
The available IPv4 pool is 192.168.1.2-63 and I statically assigned 192.168.1.63 for that last test.
The computer is an HP Elitebook 8460P with a Broadcom BCM43XX wifi adapter. The driver is the latest version.
Well after trying everything you have I gave up and got a new card (doesn't help you much as you have a notebook)
But got this today PCE-AX58BT | Networking | ASUS Global and it's been stellar - no lags or drops
Is that ipv4 pool for DHCP? I usually set fixed IP addresses outside dynamic pool (so above .64 in your case)
Other solutions: like Superfly suggested, new wifi adapter (USB solutions in your case), and found one old HP thread... uninstalling HP hotkeys worked for someone - looks like app was messing with physical key...)
Thanks again for everyone's suggestions.
I have tested a few other things like trying IP addresses outside the DHCP pool. Unfortunately the problem is not solved.
For now I have a few workarounds. With an Ubuntu installation on the same machine I can connect without problems. When I do need Windows, I set up near the router and connect via ethernet.
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