QT Charts - Delete Locks MainThread ~O(n^2) Proportional to # of Series

Calling Delete on QChart Calls RemoveAllSeries(), which loops RemoveSeries(). This calls additional functions for each series removed during delete such as update(), which locks the main thread, proportional to # series that are plotted. Because it calls on the GUI, delete/cleanup cannot be handled in a new thread.

From Testing (Natively in Windows):

12k Series -> ~30sec removeAll threadlock

9.3k Series -> ~19sec removeAll threadlock

7.8k Series -> ~12.7sec removeAll threadlock

4.8k Series -> ~4.8sec removeAll threadlock

1.24k Series -> ~0.39sec removeAll threadlock

0.735k Series -> ~0.045s removeAll threadlock

See: QT Forum - Deleting QChart Causes Application Hang