Will try to contact Oppo. But the issue is widespread. And not just with Oppo. Guess it is Netflix. Just some of their apps are more resilient to their poor infrastructure. Saw statistics that 26% of netflix users experience the same problem.
FireStick only has issue with netflix and only with 2.0 movies when you want to upmix. Oppo netflix app drops connection 3-5 times during the movie.
Will contact Oppo anyway.