Not too much the file size but the model complexity - and in case of the video card, shadows and image based materials (image sizes) that counts. Is this a new laptop? If yes, lately they are shipped with two cards - one integrated chipset into the mother board (tzhis is good enough to write a letter or browse the internet) and a dedicated card (like your nvidia) but you need to make sure that more demanding applications are set to use this card. My system is Hungarian so you may need a bit of guess work here but here are the screenshots of the settings. Go to your control panel (this is Windows 7 but there should be something similar) > Hardware and sound... [image:27asricb]https://lh6.googleusercontent.com/-Hk7Y6RJIAfA/TpKkv7GQIOI/AAAAAAAAGto/EgCMXWHWBxM/s855/Acer-02.jpg[/image:27asricb] Then to the nvidia control panel... [image:27asricb]https://lh4.googleusercontent.com/-ou5QouXzSkA/TpKkvDGt0LI/AAAAAAAAGtk/VaUGmnqYHPk/s855/Acer-01.jpg[/image:27asricb] Then 3D settings [image:27asricb]https://lh5.googleusercontent.com/-lrBPbU8SWW0/TpKkwT-tZ2I/AAAAAAAAGts/vzA6E9_q4gM/s920/Acer-03.jpg[/image:27asricb] And if your setup is like mine, either make sure to set your nvidia card as default for everything or in the next step, go to program specific settings and set SketchUp (at least) to use that card. [image:27asricb]https://lh4.googleusercontent.com/-CQU3HShpBUw/TpKkw3ei0fI/AAAAAAAAGtw/Bk9KrJ1yvKw/s915/Acer-04.jpg[/image:27asricb] Now if your system is not set up this way and this is all your card can "offer", you will need to learn to work this way or at least disable shadows while you are working.