Freezing/Sluttering on my TV


I have problems with playing videos on my TV, video is freezing/slutter when I try to watch all videos. WD my cload is conected to router and TV is also conected to the router and they are 50cm close to each other.
My Internet provider has changed router some time ago. And my question is, is it possible that the router is not strong enough and I have now problems with watching videos, because when I had my old router cicso I didn’ have any of this problems.

@johny10 What type/brand router is it? What type of movies are you streaming, regular, HD, UHD? Are you streaming over 2.4 or 5 GHz ?