UPerfect O2 setup on Mac

Custom scaling

sudo mkdir -p /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-65ab
sudo cp DisplayProductID-477a /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-65ab/
sudo chown root:wheel /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-65ab/DisplayProductID-477a
sudo chmod 644 /Library/Displays/Contents/Resources/Overrides/DisplayVendorID-65ab/DisplayProductID-477a

Hold the Option (⌥) key while clicking — this reveals the "Show all resolutions" toggle and exposes the custom modes from your override file

Custom color profiles

Open ColorSync once before copying the custom color profiles

cp "YMK EM160TP-A 100Hz HDR.icc" ~/Library/ColorSync/Profiles/
cp "YMK EM160TP-A 100Hz SDR.icc" ~/Library/ColorSync/Profiles/