Zoom in and out incredibly slow, no alt button for colour picking?

Hi all,

Just tried using Fresco for the first time and I really like the natural media brushes and how they work. However, there seems to be no way to zoom in and out properly - the increments seem tiny; whether using pinch and zoom on my tablet or the ctrl + shortcut, it takes me so long to actually zoom in or out.

It's not a huge document, 3840 x 2160px @ 72ppi, the default size (same size as monitor). When I reduced the size to 1280 x 720, it had the same problem. I've attached a video showing this.

Secondly; why are many of the shortcuts not the same as in Photoshop? I can't alt-click to colour pick, or hold alt while transforming a shape to get it to scale at centre. I really want to like this app, but it's genuinely unusable at the moment because I can't zoom in or out nor can I colour pick. There's no "preferences" modal that I can see where I can assign or change shortcuts like in Photoshop; it seems just like a scaled up port of the iPad Fresco app.