My file is 3.17 MB after purge. My Outliner has several large nested groups.
1.) My Orbit tool erratically but consistently pans instead of orbiting.
2.) Often when I zoom in on a detail the screen jumps out to some arbitrary far out location and I have to hunt my way back to the original location only to have the same thing happen all over again.
3.) Often when zooming in I encounter an invisible plane that disappears the area I’m zooming into.
4.) Simple functionality failures: a), drawing a rectangle within a rectangle and not being able to select the inner rectangle for push/pull or to even erase; b), drawing a gabled 5 sided figure which repeatedly will not close to form an opaque surface - checking that all points are in plane, erasing and redrawing to make sure, finally having to draw a line through the figure to get it to close and then erasing the line to obtain a clear surface.
Seems to me that this cannot be efficient behavior and I must have something messed up in my file or working method.
Seeking words of wisdom