Sometimes I watch videos on my TV using fire stick mirror function( connect my Android phone). Earlier streaming used to be flawless and without any issue but recently all videos start pixelating which is quite annoying while watching a movie. I've updated softwares of both fire stick and Android phone but it couldn't resolve this problem. Someone please suggest me how to fix this and why I'm facing it. Btw I'm using old fire stick (not 4k).