Liveview only showing substream for 2 of my cameras...why?

[LaZona]

In the Live view in the Hikvision app, two of my cameras always switch to the low res sub-stream during the day time. At night it goes back to the main stream. The cameras are HikVision DS-2CD2042WD-I.

All my other lower res 2MP LaView branded cameras stay in main stream 24/7.

This problem only occurs within the app. How can I fix this? Thanks.