Problem

Right now, segments in TMMaintenance grid are loaded one by one until first 20 are loaded, and then total quantity is detected. On scroll down, next 20 segments are loaded one by one, so to load hundreds of segments user should constantly scroll down each time next 20 segment loaded.

Solution

Segments should be loaded still one by one but until 2000 are loaded or until user scrolls up the grid a little bit so if 31st segment was loading it should be aborted until user scrolls down again to trigger loading 2000 segments one by one starting from where it was aborted (i.e. starting from 31st segment)