@nprofile1q...
I vote for Gtk3. Better works on HiDPI than Gtk2.
At first, Gtk3 struggled from unacceptable slowness of files dialog (especially there are large directories or network shares), but already fixed by updated glib20.

And for WiFi drivers, the effors are started with iwx driver (implememted on OpenBSD and shared to FreeBSD). Hope this effort grows up.