What is your "Dialogue Box Auto Update Delay" time set to in your Work Environment?
This will affect how long you wait for a parameter change to take effect in the preview window.
But you can speed it up by simply clicking elsewhere in the dialogue before the time is up.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11