Tiny size indicators on high-resolution displays
I have Windows 10 and a display with a resolution of 2560x1440 and a scaling of 150%. Illustrator displays tiny size indicators. Take a look at the screenshots.
This is a long-standing problem with the scaling of the Illustrator interface. Please correct it, my eyes hurt.

We have the fix available in the latest release. Please update Illustrator using Adobe Creative Cloud application to the latest build for version Illustrator CC 23.0.
Please refer to our knowledge base FAQ – https://illustrator.uservoice.com/knowledgebase/articles/1844590 if you face difficulty in update.
Or get in touch with us at any of the other support channels – https://helpx.adobe.com/support.html
Warm Regards,
Ashutosh Chaturvedi | Sr. Quality Engineering Manager – Illustrator
Adobe. Make It an Experience.
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Xucong Zhan commented
Illustrator ver.: 22.1 (64-bit)
Problem:
Since an update at the beginning of this year (I think), the UI scaling has become unusable on my laptop, which is an ASUS UX501VW with a 4k 15.6-inch screen. UI scaling is set to the maximum value (200%) but have a look at the screenshot on a 15.6-inch screen and you will see that it is not going to work out unless I put my face 20cm in front of the screen. Also the UI becomes extremely difficult to navigate because the buttons and menu options all become super tiny. Take a look at the screenshots of comparison.
Wierd enough, since the same update, the Photoshop UI scaling has improved dramatically. Before, the UI will either be super tiny at 100% scaling or super large at 200% scaling. I believe this change in UI scaling is related. Please take a look. Thanks in advance.
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Ian commented
When transforming everything is fine, but when you draw, the size indicators are small
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Ian commented
Start watching the screenshots from the last one - path-1.png
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Sunny commented
Provide a way to increase tab size AND font size in UI - PC settings don't seem to affect a change within the app and the font is tiny on screen with no way to increase.
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Anonymous commented
Try GPU scaling option in your screen settings
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Anonymous commented
My new 4k laptop doesn't display the Adobe UI correctly in AI, PS, and other standard CS6 programs. I'm seeing that this complaint has been around for a couple of years, so it seems like there should be a fix by now. (I've tried the workarounds posted online to no avail.)
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Anonymous commented
The handles on the WYSYIG tab ruler are tiny and really, really, really fiddly and hard to work with.
Arrrrh!!
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laci commented
I'm using illustrator CC. And Windows 10 creator edition. On a hp spectre x360 15.6"
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laci commented
Menu options and tools icons are tiny. Adjusted computer display settings but they are all still tiny.