I purchased 2 Deco M4's today (replacing my ISP issued router), since installing, there have been multiple occasions where I lose internet access for about 2 minutes sort of randomly. There was a period of a few hours where I did not lose internet access then it dropped twice in the same hour. Afaik this was not the case with my old router. 

Could it be that I've set up the Deco's/Mesh incorrectly? or could it be an ISP/Provider issue?