Graphics display issue

I have been using RB since 2009 and would like to upgrade to XOJO to create a flow charting application, I am really concerned about the poor display quality of the drawings (i.e. RoundedRectangle) compared to what it is possible to get on the Mac platform.
I have performed a similar test with V.S and result is much better.
any suggestion on how to improve radius on RoundedRectangle

Do you have GDI+ enabled?

GDI+ was not enabled, it is now but don’t really improve the RoundRectangle display but it improves a little bit the circles