ENB GUI mouse click doesn't work

[Manany]

Hello,

For some reason, on my fresh windows 7 install, I cannot use my mouse click with the ENB GUI, I can move the "ENB cursor" but I cannot open menus or check/uncheck boxes.
I can still tweak the ENB ingame with enter instead left click but that's not as convenient as mouse click.
It looks like for every click I do, it does 2 clicks and instantly cancels... there are freezes when I try to check or uncheck some effects, yet my mouse has no such problems...

I have no idea where this problem comes from, I tried several things prior to ask for help.

I tried to remove MSI Afterburner (although I don't use OSD monitoring) and disabled the steam overlay and VR options
I tried several geforce driver
I tried several version of ENB -> 0.266 to 0.305
I tried several things in enblocal.ini

None solved the issue :/

Any idea ?

[ENBSeries]

It's crapware and nothing else.