New option to disable the SSBU Online Deluxe mod's own overclocker.
The problem
The mod ships its own overclocker: the libnx_over.nro skyline plugin plus sysmodule 00FF0000A11CE0FF, which Atmosphère loads at boot. If you already run Horizon OC or sys-clk, both drive the same PCV clock rails and the console freezes — either when launching Smash or a few seconds into it.
Tell-tale sign: if renaming your Horizon OC folder makes the mod work, this is your case.
The fix
Press X on the SSBU mod screen. It turns the mod's overclocker off and leaves Horizon OC untouched, without affecting the rest of the mod.
It is reversible offline: turning it back on copies the files from the .nro itself, nothing is downloaded.
Reboot the console for the change to take effect.
Notes
- The option only appears when the mod is installed.
- Procedure confirmed by saad-script, the mod author.
Install: copy nextendo.nro to sd:/switch/nextendo.nro.