I have just downloaded the Intellij Ultimate Edition and I am loving it. However, the text is blurry compared to the community edition (the one I used to use). It seems like the fix for windows users is disabling the DPI scaling (https://intellij-support.jetbrains.com/hc/en-us/community/posts/206809965-new-user-hi-dpi-Fonts-are-all-blurry?input_string=Fonts%20are%20Blurry%20on%20the%20Ultimate%20Edition%20-%20Mac).
However, I don't know how to do this on my mac? I use a Macbook Air 13 inch.