So i want to allow user to resize their screen size as big as possible , and i want my text ui to resize according to the screen size using best fit and anchor set to stretch , with best fit min size of 1 so it don’t disappear when screen too small , but then i realize best fit max size is a finite value , so how do i do it ?
Ranges should be realistic where the smallest readable point size is about 8 points and largest is very unlikely to exceed 300 unless you are using some crazy scaling on your text objects which is not recommended. Scale of text objects, especially when using auto-size should remain at (1, 1, 1) where the parents may scale but the text object should remain at default scale.
Using Auto-Size has performance overhead as it is an iterative process which will get worst with larger ranges.
Given the added performance overhead of Auto-Size, I do not recommend using Auto-size on all text objects as it is not necessary. See the following post with my thoughts on how this should be handled to achieve the same / better results without the performance overhead.