This has been solved but i thought i should report it anyway
When launching PDN and moving the window between the 2 monitors, one having 150% DPI and the other have 100% DPI the layers panel would not snap correctly and just find random spots to snap to rather than the expected points.
The solution to this, is to tick the box under Control Panel\Appearance and Personalization\Display called "Let me choose one scaling level for all my displays"
Then log out or restart, launch PDN again, move the window and the panels about, close PDN
Untick the option box mentioned earlier and hen log out or restart
Done!
