Panel overdrive button being missing after v5.8.8.0 appears to be spreading.... https://www.reddit.com/r/ASUSROG/comments/1bpxrps/help_panel_overdrive_disappear_from_armoury_crate/

See this forum post: https://rog-forum.asus.com/t5/armoury-crate/ver-5-8-8-0-panel-overdrive-option-not-working-properly-on-flow/td-p/1004447 Ever since V5.8.8.0 was released last week the panel overdrive button has disappeared from Armoury crate on ...

ASUS TUF Gaming A15 AMD Ryzen 7 6800H 16GB 1TB SSD GeForce RTX 3070 15.6 Inch Windows 11 Gaming Laptop - panel overdrive missing from Armoury create after 5.8.8.0 update, same issue as original poster.