the frustrating experience I had was with one that was made for brakes, and issues fixed when I put in a proper deailleur one.
I don't recall what brand the brake one was, and I'd have to look at the functioning one for brand--- this is a 9 spd bike, so possibly easier or less finicky than 10,11 speeds?
Those TSG adjusters sit on nominally 3sp shift cables, but on a folder everything can be tricky. One of the 3 speeds is squeezed into 2 speed space with 10- and 11-speed hardware and is very finicky to set up. Yet these TSG adjusters work better than the brand names I mentioned all of which were specifically meant for the shift cables.