New Features

General

Setting to disable boats in the scenery (Settings -> Graphics -> Draw boats)

 

Fixes and Enhancements

General

Fixed various replay crashes

Removed forced aspect ratio for avionics pop out screens (XPD-16003)

Scenery

Improved performance of boats

Changing the World Objects Density will now immediately have an effect on the number of boats displayed

Increased visibility of smaller boats and sailing ships

 

https://www.x-plane.com/kb/x-plane-12-1-2-release-notes/

thanks