9380 issues SOLVED: touchpad random clicks and jumps; WiFi connection stability; input lag in battery mode.
Here's what worked for me. Random clicks and jumps while scrolling: Set touchpad sensitivity to low; open mouse properties and set double-click speed to highest; set the number of scrolled rows to lowest (to 1). WiFi stability: open Killer settings and disable the Advanced Stream Detect. Input lag when in battery mode: click the battery icon in the tray and select highest performance; open Dell Power Manager from the Start menu and on the Battery Information tab set the Battery setting to 'Standard'.