Thank you for your post.
Unfortunately, you didn't mention what version of FileMaker Pro you were using, nor what platform. We have seen quite a few problems with screen refresh on Windows machines, so I'm assuming that also applies to you. Some of these users have received updated drivers from the manufacturer, and this has also helped considerably.
There is one report of a screen redraw/slowness problem with nVidia Quadro NVS 280 PCI-E running on Windows, but that was fixed in FileMaker Pro 9.
Any additional information you can provide would be helpful.
I am running FM10 on an XPpro machine. I updated the drivers from the 2008 version to the 2009 version and it seams to have solved the problem. Thank you for the suggestion.