@melissatr said: the program gets super slow and it makes it too hard to work on my file. Do you have any suggestions on how to reduce the file and fasten sketchup? Well, you might be able to do some cleanup to the CAD file before importing it. What graphics card? Maybe you need to update the drivers or get a better GPU. That's often where the bottleneck is. Looks like you changed the year but it still shows Free/Make which creates confusion.