Under video options, unit scaling.
If I change to not scaling, it seems to 'stick' to always scaling, regardless of changes to this menu.
The sequence was (from memory): change value, play, zoom out to cloth map, zoom back in, go to menu, change value back again.
In otherwords, I get liddle biddy men when I zoom in now, regardless of the changes to this field
This happens regardless of the size value (normal, proportional etc).
Under general settings, disable zoom limiting. This value does nothing, zoom limiting is always on. [Maybe intentional in the beta]
If this is intentional, maybe a little note to say so.