I changed from on olderer wifi router to the Deco M5 because I had buffer errors from time to time.

Now I get all kinds of wierd errors.

2-3 of my apps are not loading, and some websides ex. youtube.com fails to load, both app and webpage, a few times it actually loaded, but all the photos from the movies did not apear, and a few times it loaded fine ??? also google.com is sometimes not loading, and  I have 2 TV's with chromecasts, on 1 tv it is working, but the other dosent ??? I am using the 2.4 GHz frequens band.

Looks like some kind of DNS confusion, or maybe some security settings are blocking something for whatever reason, though I cannot find any setting to change.

anti virus and parent control is disapled.

any suggestions ?

thx in advance, and sorry for my bad english.