SA 520 failover to Optional WAN connection is so slow it's unusable
We have SA 520 and 2 connections, one VDSL2(Primary) and one ADSL2+(secondary), both with static IP's and modems set to bridge.
SA 520 is working ok with VDSL2 but couple of days ago we started having problems and SA 520 correctly switched using ADSL but it is horribly slow, except for google, which for some unknown reason is as fast as normal. I tried every possible settings on failover and dedicated WAN on Optional without success.
However, when I plugged the ADSL to the WAN port and entered same settings, it works in normal speed without problems. Anyone else experiencing unusable optional port?
Is it normal that Optional WAN is not working or do we have a faulty device? Using newest 1.1.65 firmware.
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