[Inkscape-user] Alternative to Inkscape for Windows 7

I have a recent laptop with Windows 7, 64 bit and 8GB of RAM. If I use any kind of effects on inkscape I can forget using inkscape for the day because the speed is so slow it takes a day for any movement to appear on the screen. Again trying to export to bitmap is impossible. If I don't use any effects then the speed is reasonable. I like what Inkscape is intended to do but does anyone know of a similar open source program that will work on Windows 7??

Dennis