Hi, I am using the Taranis XQ7s Access with Inav 3.0, and ELRS 0.1.3-RC2 with HYBRID_SWITCHES_8 turned on.

I'm trying to make a logic function to handle VTX power, and my issue is with potentiometers' values,
because in the radio they seem to function great, but in Inav, my potentiometers are only reading LOW MID and HIGH values, and they are snapping instead of smoothly climbing values, like 3 position switches. what can I do about it?

You're not alone. Two potentiometers.

I can confirm transmitter reads smooth transition from -100 to 100. iNav will snap to fixed value. I think I get 7 or 8 fixed values when I rotate the knob in receiver aux. They do snap to each range. That is bad idea if wanting to use the pots for pan & tilt camera.

Does anyone know of a solution?

In my case, I use Mambo + BetaFPV 1W Lite

So here's what It looks like
left potentiometer full knob twist, I get fixed values of: 1000, 1275, 1425, 1500, 1575, 1725, 2000
right potentiometer full knob values: 1000, 1066, 1133, 1200, 1266, 1333, 1400, 1467, 1533, 1600, 1666, 1733, 1800, 1866, 1933, 2000

This was highlighted somewhere in an article or maybe on one of JB's videos on YT, but specifically in relation to ELRS and EdgeTX. Off the top of my head (and I could be wrong), when you setup a potentiometer the radio or ELRS sees it as 8 positions, so on Betaflight (and maybe iNav) eight slider positions. But by changing whatever setting it was you could increase it to either 16 or 24 positions which made it more gradual. I can't remember what the setting was, but it's definitely mentioned in one of JB's videos.

Someone else might know. I think it was more of a setting for fixed wing aircraft where pots are more useful.