My issue isnt just Pathfinding, seem to run strange or have random glitches across Safari, FF and IE as well not running Blending Modes correctly on some other machines. So far performance is great on Chrome PC & MAC. I may just force the game to be ran in Chrome. Since this is simply a hobby and a outlet to use my illustration. I have no intention of charging so I will force users to use Chrome. Maybe it has something to do with that Chrome is a 32bit browser and FF is a 64bit browser? However, I have a 64bit version of Java installed.