I can happily say my P905 does not have this issue.
I'm using the Logitech K810. Spend last night typing about 80 pages worth of text on it whilst playing the Emmy awards livestream over WiFi, it didn't drop once.
Tested it again just now, 5 minutes, 4 pages and TuneIn, no drop. Speedtest does this:
It does appear to be capped at 65Mbps, instead of the 120Mbps my laptop gets. But I've always seen Android devices do that.