Even on my main pc, a lot of the new design is unusable as the font size is so large - for example, the drop down menus may show 2 or 3 options before dropping off the bottom of the screen. Typing a selection from the drop-down also does not work beyond the first letter, so making it hard.
The new screen design is (imo, and I develop for web) poor. Am opening a related idea showing impact of new design on editing sales invoices. Improving performance is good but if its at the expense of usability it doesn't actually help users..
Please raise a support ticket and attach a screenshot so we can investigate further.