A working 4K setup needs an available 4K source, compatible decoding and display, and sustained network delivery. The Pro Max 4K OTT brand name is not a guarantee that every item meets those conditions.
Check the whole playback chain
- Actual source resolution and availability.
- Device and player support for the source codec.
- Display and output configuration.
- Stable network delivery at the time of use.
- Account and concurrent connection conditions.
Test before changing equipment
Use the final screen, player and connection. Compare a source that support has confirmed with another item. Record whether the symptom is reduced detail, stutter, buffering, no picture or a display setting issue. These are different problems.
Use a supported lower-quality source when appropriate
If a specific source cannot be decoded or delivered reliably, ask support whether an alternative is available. Do not claim a change of label or player can create a higher-quality source.