Settings worth knowing — Anime Card Duels Wiki

Open Settings from the top bar. These are the ones that matter most.

Battle

Battle Speed - how fast battles play. Only speeds you have unlocked can be picked.
Battle Effects - attack and ability effects. Off gives simple hits.
Hide Reward Pop-ups - hides the ITEMS OBTAINED banner. You still get every item.
Restart Battle and Forfeit Battle - only shown while a battle is open.

Auto Battle - your cards fight by themselves.
Ability Prompts - when an ability asks a question: Ask (show its button), always use it, or always skip it.
Auto Targeting - which enemy Auto attacks first: Highest HP, Highest DMG, Least DMG or Least HP.
Auto Retry - starts the same battle again when it ends.
Auto Repeat Raid, Auto Repeat Rift, Auto Repeat Draft, Auto Climb (Draft Climb) - see AFK, auto and battle features.
Stop Auto Repeat When Maxed - pauses raid and World Boss Auto Repeat once you have earned everything this time.
Auto Explore - claims explorations and sends cards out again.
Auto Claim Playtime Gifts and Auto Claim Daily Login.
Daily Login Popup - opens the daily rewards when a new day starts.
Auto Decline Friendly Battles - turns down every friendly battle request.
Auto Reconnect - rejoins you before the AFK kick.

Quick Roll Card - the small card shown while Quick Roll is on.
Rare Roll Popup - your rolls at least this rare pop up big on screen.
Instant Roll Reveal - the best card of an instant roll is shown first, then the rest.
Show Stat Grades - the R to LR badge on your cards.

Announce Global High Rolls and Announce Server High Rolls - rare roll messages in chat.
High Roll Messages From - only show roll messages at least this rare.

Each tower has its own Auto Restart, Advance Timer and Auto Pause. See Towers.

Music, Sound Effects and a volume slider for each.

Reduce Window Animations - windows open and close at once. Smoother on low-end and cloud phones.
Low Graphics (Potato Mode) - turns off shadows, glow, particles, world lights and moving lobby effects, only on your screen.
UI Size - makes every screen smaller or bigger.
Raid & World Boss Pop-ups - the big banner when a raid boss or the World Boss spawns or a rift opens.
Show Draft Banner - the Draft run bar at the top.