Currently, there's default 'Last 7 days' period applied when:
There's currently no way to modify this default period for displaying results.
In our environment with lots of executed test suites/cases (thousands during Last 7 days period), it takes much longer to display results of individual test suite (e.g. 3 minutes instead of 3 seconds).
The ideal solution is to provide custom property to specify default period, e.g. we would set it to 1 hour.