This Game Makes My Router Factory Reset on Matchmaking

I played this game for 80 hours without any problems, but for the past few weeks (Since they add the Fort on bounty Clash), every time I enter a match, the router freezes and factory resets itself…yeaah… I've already changed both my modem and internet provider, I've changed my DNS, opened the specific ports that the game uses, and also enabled plug and play on the router, but nothing changes. What bothers me the most is that it only happens in this game; ANY OTHER online game works perfectly without even a hint of lag, even on p2p conections.

Has anyone else had this problem before?