Conection problem

Since last week i have the latest firmware updated automatically. The firmware version is V7.2.15_5.1.16

The fiber modem was also replaced by my provider last week; it's a Sagemcom pack mailto:F@ST 5684 deu to a takeover, and they upgraded from 1 Gb to 2 Gb.

This was connected by the provider itself.

The entire house is wired with Cat 7, including the switch cables and everything going throug LAN.

My house is 120 m2 , and is made of concrete. 

The distance to the sattelites is about 5 to 6 meters.

With one satelite, the coverage was poor, hence i acquired a second one.\The mutual connection status is bleu and indicates "good"in the web app.

The wan WAN preference is: Internet Port (2.5 Gbps).

The channel is: 2.4 GHz autochannel and the 5 GHz channel 36.

Armor, Smart Parental, IPv6, and the trafic meter were turned of.

The disconection was only WAN and occured only with the Google Chromekast every 3 to 4 seconds.

Following the suggestion, I turned off all the sattelites, then everything went back to normal. Later added the sattelites one by one, and everything is working correctly now