@Kevin_Z I must recon that after my ISP changed the old modem by a new one, which is modem and WI-FI router of brand Arris, I am not experiencing the problem since a month ago. Now it is losing...

Same problem here with TL-WR841HP. Can't find solution nor accurate diagnostic.

I have the same problem with WR841HP v2 firmware 3.16.9 Build 151124 Rel.57926n. Network conectivity is lost and it is recovered by reseting the route (power off - wait a while - power on). Will...