A clue is that your signature mentions SkyPortal I-Pad Pro. Are you using WiFi?
Wild slews are symptomatic of Celestron WiFi connectivity problems. Early SkyPortal external WiFi accessories emit a signal identified as 'SkyQLink. The latest version emits a signal 'Celestron xx' where the 'xx' represents a number between 1 and 256. The latter signal is 20x stronger and the chip was manufactured by Zentri Ppty. The number is designed to create multiple combinations to help avoid conflicts due to "Internet clutter". Early versions (and in early Evolution mounts) were notorious for this problem. It is one reason never to buy a second-hand SkyPortal external WiFi accessory.
First step, see if the performance problems exist when using the hand controller. That narrows it down to WiFi/Tablet. If you are using Direct Connect, instead try Access Point Mode. Mike Swanson's book contains other WiFi improvement tips. But if your WiFi signal is 'SkyQLink', ask your retailer to replace your SkyPortal external WiFi accessory if still in warranty.
Edited by Noah4x4, 14 September 2018 - 03:57 PM.