Some things I’ve tried that haven’t solved my issue but may solve yours are:
– Update the drivers and firmware for your controller, found via Serato’s website.
– Update any necessary Windows or HP drivers, updates, BIOS upgrades, etc.
– Update ITCH to the latest version, 2.2.2 last I checked.
– Defragment your hard drives to increase efficiency.
– Run your music in the program locally from the laptops HDD and not a USB drive.
– Disable Wi-Fi, antimalware, and any other non-essential programs running in the background.
– Try a third-party USB cable or update your USB drivers for the HP.
– Do not use a USB Hub.
Happy troubleshooting, friend.