Logging this issue as per user comments from chromereleases blogspot after M52 was promoted to Stable on 07/20.( 100% of Mac)

URL
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http://googlechromereleases.blogspot.com/2016/07/stable-channel-update.html

Comments from few users
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The font rendering from the changes in Chrome 52 on Mac OS are terrible and blurry 

Material on macOS looks just awful - and makes no sense, this is macOS, not Android :-(Luckily there's an flags option to choose the standard OS design again. If that option goes away at some point it's goodbye to Chrome for me.

Wow! I'm running Mac OsX and all of a sudden my fonts in Chrome are HORRIBLE! They are extremely fuzzy.

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Guessing this is due to the material design change on Mac.
Tracking Launch Bug : https://bugs.chromium.org/p/chromium/issues/detail?id=547953

Assigning to the feature owners for further investigation.We will try a repro and update the thread soon.