Every time I open tracker it takes on average 15 seconds to open up, and when I am using the porgram it is very laggy when stepping back and forward in the video. When I am using my trackpad the program can only zoom in accurately, it does not let me zoom out.

I really like this program and require this for many of my physics experiments, but it can get very frustrating at time because of the lag. I almost two hours a couple of nights ago trying to work on 6 x 6-second videos.

If anybody can give me any tips it would be great.