EasyWorship transitions lagging.
That laptop doesn't even come close to meeting even the minimum hardware requirements to run EW7. EW7 mainly uses the Graphics Card/Chip and integrated Intel graphics can't handle it. Unfortunately, it isn't possible to upgrade the graphics on a laptop. There are a couple of things that might help.
First, reboot the computer, then re-install EW from the latest version 126.96.36.199. Essentially you will be performing what is called a Repair install. It's possible that there was some file corruption during the install. A few people have posted that this helped them with similar issues.
Try without any backgrounds on the slides, No images, and especially no motion backgrounds to see if that helps. Motion backgrounds can cause a lot of stutter, especially if they are high resolution, high BitRate videos).
Try without transitions (re, set them to none).
Essentially, you just have to experiment to see what helps and what doesn't. I have been able to tweak the backgrounds and system that allows our Childrens Church to be able to run EW7 on a 10 year old laptop with Integrated Intel Graphics at 720p (1280 x 720). It will balk with motion backgrounds, but is fine with still images.