When I am in Surveyor sometimes the graphics starts to bog down slowing my editing efforts down.
If there are a lot of scenery items then things will slow down considerably as you move along. FYI a lot of your graphics card effort is devoted to calculating and displaying the correct shadow for each object as you move along so the more denser the scenery the more things slow down. One quick way to speed things up is to turn off shadows in the Trainz Settings in your launcher. Turning off shadows will speed up things considerably. Here is a screenshot that shows the setting to turn off:
Bob
If there are a lot of scenery items then things will slow down considerably as you move along. FYI a lot of your graphics card effort is devoted to calculating and displaying the correct shadow for each object as you move along so the more denser the scenery the more things slow down. One quick way to speed things up is to turn off shadows in the Trainz Settings in your launcher. Turning off shadows will speed up things considerably. Here is a screenshot that shows the setting to turn off:
Bob