This article explains how to manage Chrome WMS Pixelation issue.

A combination of Windows 10 updates and Chrome Updates have conspired to cause DPI "unawareness". This affects some instances of Windows 10 OS using Chrome browser.
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The WMS screen looks pixelated. Sometimes after clicking anywhere on the screen, it appears normal again, but once you hover over certain parts again, it reverts back to pixelated.

Example issue:

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