I have the same thing. I bought a really expensive computer and part of it was because of the touchpad
I really need this to be figured out
Please let us know the version of Photoshop you are using now? Is it the latest one CC 2017.1.1?
Also, refer the below discussion related to the similar issue
I just activated it a week ago for me so I'm guessing the newest version (I'm not replying on that computer but one I use for school)
Do those just work on macs then?
Have either of you try resetting the Photoshop preferences to see if that reenables the touch gestures not on the trackpad?
Reset Photoshop preferences: https://helpx.adobe.com/photoshop/kb/basic-trouble-shooting-steps.html#prefs
According to the engineering team regarding gestures and trackpad support: "We don't support gestures on the trackpad. All we get there are OS window gesture events which can be unreliable."
So if it's working on-screen, but not on trackpad, that is working as intended.
Hopefully this helps shed some light.
Let us know how it goes.