I have been using the router on 4G-LTE SIM. It was working fine. Recently subscribed a broadband connection to increase the throughput.
The service provider provided copper cable (cat5/7) with static IP which was duly configured after changing the mode to "wireless router mode".
Although on pinging any public domain, there is no loss of packet (<3-4%), the router intermittently shows connection disconnected and while browsing,bmany popular websites don't open showing msg "err connection reset" but on refreshing the browser 3-4 times, site will open.
Further, speedtest apps / websites also mostly don't work mentioning unable to connect to server. Connection speed (<15 Mbps).
On connecting an old router of "Tenda", with factory settings, the same IP/Gateway/DNS, it is working perfectly fine with higher speed (>30Mbps).
Both router using MTU=1500.
Please help resolve the issue.