Memory leaks in Power BI custom visuals

The memory usage is about 1900 MB after som substanstial page switiching. I tried to test the release of memory (as described by Marco), but unfortunately Windows Update restarted my computer during the night. However, while PBI Desktop still reached 1900 MB, it never became completley unresponsive, just sluggish. A few days ago when I initally tried the new release, it lock up completely.

We use two custom visualizations, both developed inhouse. The first is a simple tool tip that uses a visual level filter to show one of maybe fiften strings, on mouse hover.

The second visualization is more advanced. It's a map based on Google Maps. We're using both the street view and the heat map functionality in Google Maps. We plot the data points as pie charts using D3. If a user clicks on a pie charts, all details for the data points are shown to the user. There's no limit on how many data points the map can show. I've included a screen shot of the map below. Everything that shows in the window, except the column on the left, are data for the selected data point.

Our application contains very little data as all data input is by hand in a separate web application. Currently, it contains about 2200 rows. All rows with location data are shown on the map (I would say about 2000 data points). A saved pbix, containing all data, is less than 2 MB in size.