@revitPWC6K wrote:
I cannot admit that this is an acceptable solution. When you have set angles in this window for snaps,
anyway the routing solutions still has halucinations and creates angles of fittings which do not exist.
First, I didn't say that its a solution, it is a workaround as stated earlier.
Secondly it does work if you set the snap increments correctly, allow the pipe to snap to the angle before releasing the mouse button and the elbow families allow those angles.

Please provide examples of it not working and maybe someone can help you with your specific problem.