• Right trackpad -> as mouse with click
  • Sensitivity: 145%
  • Right trigger soft/full pull dampening: 30
• Left trackpad -> "Combat" touch menu
  • Activation style: click
  • T: Show cell
  • Space: End turn
  • X: Use reserve
• Left joystick -> "Spells" radial menu
  • Button type: continuous
  • Keys 1 to 9 on the number row
• Right joystick -> DPad
  • Up: Scrollwheel up (turbo enabled)
  • Down: Scrollwheeel down (turbo enabled)
• A -> Enter: Opens chat, or confirm selection in some menus
• B -> Escape: Closes anything you'd want to close with a B button, and can open the Escape menu of course
• Menu (three bars) -> F: Opens your friend list
• DPad -> Arrows: Works in a wide range of selection menus (was a nice surprise and I kept it, very good QoL)

The game runs perfectly on Ultra graphics settings, but eats the battery away. On Medium with Half Rate Shading (from the Deck's performance settings') you can have many hours before needing to recharge, and lots of leeway to find your charger when you finally see the 10% left notification (enough to finish a dungeon, for instance).

Dialogue or some tooltips can have quite small text. There is an option for "resolution scaling" but it doesn't seem to do anything.