Try this idea to see if you can improve the situation:
If your MPW is connected to the home router (and it should be for home use for best performance) send movie to router via one band and receive on viewing device on the other band… For example, send using 2.4G and receive by 5G If the same or worse quality, then reverse the band you send and receive on and see if it is improved. Use what works best. Using two bands improves throughput.
