•Disable Auto-Rebuild. Then experiment. You can continue to add many elements successfully when rebuild is inactive. Use Rebuild-Now every 4-5 commands to rebuild.

•Number-of-Steps : Make 90 steps, or even less. You do not need many steps as you build the model.

•Disable Show Solids in Mechanisms : You do not need to show the Solids to add elements, to review the kinematics, or to calculate Forces.

•Image Quality : If you must show Solids, then experiment with the Image-Quality. Do this when there are many Solids in the model.

•Spin-Box tool. Do not use the Spin-Box tool. The model re-calculates with each click of the Spin-Box. Use your keyboard to enter new values in each data- box.