I have a main office with an MX85 and a small remote office with a Z3. Recently, traffic through the VPN tunnel gets very slow during the day. After resetting the Z3, traffic will speed up for a couple of hours but then slow down again. Direct traffic to the internet is very fast at both ends. Pings through the tunnel start in the range 20-30ms but after a couple of hours suddenly increase to 500+ms. Pings to the outside IP address are in the <10ms range at all times. The Z3 reports bandwidth usage under 5mb/s at peak, usually well below that. If I reset it after office hours, it returns to 20-30ms and stays that way until late morning the next day.
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