Casting issue

I recently upgraded to chromecast HD. Now when casting movie files from my Samsung A52, the casting would drop after approximately 10 mins. I enabled the never sleep option while charging in developer options which has seem to have fix the problem somewhat. I stills drop the casting randomly, maybe once or twice during a 2 hour movie. I have tested the wifi connection and all is good there. My router is a tp link ax55 and is within 20 feet. Not sure what else could be causing problem. Casting would fine with my chromecast 3 before.