[BUG/Enhancement]: Increased loading times with large number of tasks.

[matteokosina]

Describe the bug
Tests have shown that the task overview page needs more time to load when a larger number of task are to be displayed. To be more precise this became visible while working on the benchmarking epic. When 5k+ tasks have been run the UI needs roughly 2 seconds to load. While still acceptable this could be improved by not fetching and rendering all task cards in the stages at once but rather in a chunking fashion.

To Reproduce
Steps to reproduce the behavior:

1. Create a large amount of tasks (5k+)
2. Go to task overview
3. Notice slightly longer loading times to load the entire page

Expected behavior
Fast load.