Lanai: System runs out of application memory while running the Unmanaged_BufferredImage_draw_NearestNeighbor test multiple times

System runs out of application memory while runnings the Unmanaged_BufferredImage_draw_NearestNeighbor J2DBench test with metal pipeline multiple times.
With me it happened while running the test 2nd time.

Steps to reproduce
1.launch the J2DBenchmark UI
2. load options Unmanaged_BufferredImage_draw_NearestNeighbor options(attached).
3. run it multiple times.

seeing this on Macmini 10.14 with uiScale=2 on default non retina display.