D-pad down key drift in every homebrew on the PSP after installing ARK

[Windows10User2]

Every homebrew (like RetroArch, EmuMaster and gpSP) on the PSP has d-pad down key drift after installing ARK. I didn't even install Infinity but I also have this problem with it installed.

EDIT: Weird, after all it doesn't have to do with ARK since I also have it with PRO-C.

EDIT 2: Now I'm not having the drift problem after pressing hard the D-pad down key. Weird.