I'm still having the issues.
Here's what you've requested.
Model: 7120X - Roku TV
Software version: 10.5.0 build 4201.30
This happens with any channel and also with external devices such as Blu-ray player or other streaming devices connected via HDMI.
Tracker ID 32-459-728
To reproduce just play any movie.
I've added a picture of Jungle Cruise on Movies Anywhere and it shows the soap opera effect. It looks as if the movie was recorded with a camcorder.
These are the picture settings at the time is this picture.
TV brightness - normal
Picture mode - normal
Picture size - direct
Local contrast - not available
Dynamic contrast - high
Color temperature - normal
Anton smoothing - not available
Natural Cinema - not available
LED motion clarity - off