Can't use 'walk' feature on iPad

When I click the ‘walk’ icon, it brings up the + sign and sets the height. But then when I start dragging my pencil, the camera maybe zooms for a second and then suddenly zooms straight into a wall or into the floor – it’s like it’s glitching or something. I can use the walk feature fine on desktop but it’s not smooth or easy to use on ipad. Am I doing something wrong? Or is there some easier way to navigate a model on ipad where I don’t get stuck inside of walls or floor?

Thanks so much!

The only times it acts glitchy for me is when I ‘walk’ over an obstacle, like a chair or step, or try to walk through a closed door or window. It jumps me up and the forward.

Mine moves forward smoothly (and very slowly) otherwise.