macOS Sequoia performance tweaks for MacBook Pro 2019 (Intel)

macos-sequoia-perf-tweaks.sh

#!/bin/bash
# macOS Sequoia Performance Tweaks
# MacBook Pro 16" 2019 (MacBookPro16,1) — Intel Core i7 / 16GB RAM

# ── Major OS Upgrade Block ────────────────────────────────────────
# Prevents Tahoe (or future major releases) from appearing in Software Update
# while still receiving Sequoia security/minor updates
sudo defaults write /Library/Preferences/com.apple.SoftwareUpdate AllowMajorOSUpgrades -bool false

# To re-enable:
# sudo defaults write /Library/Preferences/com.apple.SoftwareUpdate AllowMajorOSUpgrades -bool true

# ── Visual / Animation Tweaks ─────────────────────────────────────
# Disable window open/close animations
defaults write NSGlobalDomain NSAutomaticWindowAnimationsEnabled -bool false

# Disable focus ring animation (blue outline on Tab-focused UI elements)
defaults write NSGlobalDomain NSUseAnimatedFocusRing -bool false

# Instant window resize/sheet animations
defaults write NSGlobalDomain NSWindowResizeTime -float 0.001

# Dock: instant autohide delay, subtle 0.3s show/hide animation
defaults write com.apple.dock autohide-delay -float 0.0
defaults write com.apple.dock autohide-time-modifier -float 0.3

# Mission Control: faster animation
defaults write com.apple.dock expose-animation-duration -float 0.1

# Restart Dock to apply changes
kill -9 $(pgrep -x Dock)

# ── Manual Settings (via System Settings) ─────────────────────────
# Accessibility → Display → Reduce Transparency: ON
# Accessibility → Display → Reduce Motion: ON  (was already enabled)