Found the issue - your comment on screen resolution reminded me that Windows 10 screen scaling is by default set to 125% (as in screenshot below), when I changed this to 100% the game worked perfectly at default browser settings. Odd that it affects this and not other Unity projects though?
Easy enough for me to work around though :)
Thank you so much! That was exactly it, and I was able to fix it by forcing the devicePixelRatio to 1 to prevent unwanted scaling. I'll upload a new build to fix that. I'm not sure if other unity projects are using the PixelPerfectCamera component, but maybe the issue has something to do with it.
EDIT: Should be working fine now for both 100% and 125% sizes.
