Everytime i open the page ''http://portal.pixelfederation.com/'' then click on Trainstation (that uses flash player) and waits the page load completely using Firefox Browser I notice the scrollbar bar lagging when i move it down and open anyway, but when I open the same page using the Chrome browser the scrolling runs preety well, i dont know about me but i think Chrome shows pretty more efficient with this page than Firefox, I don't know why.
I've already installed all the latest graphic card drivers for my laptop, the latest Adobe Flash player for Mozilla, Pepper flash player pluggin, PPAPI host and NPAPI plugin adapter, but the issue persists only with Firefox.
I'm using a ASUS S400CA laptop with Core i3 2365M, 4GB of ram DDR3, a 5400rpm Sata Hard disk, and Intel HD Graphics 3000 onboard.
I read this page before, i think it points the same problem or very similar : Why firefox page scrolling is slow on Ubuntu 14.04?