Question Update KB4503292 cause significant Windows 7 performance loss

aor999

Commendable
Jun 28, 2017
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I today installed June KB4503292 monthly rollup in my father computer, and noticed that upon installing, the Windows 7 startup takes forever and Windows 7 performance significantly lowered, and even the fade in and out animation of the screen when Windows entering the computer display to energy saving mode, is in slow motion. Also: Firefox takes forever to respond.
Remove the update returned the system to normal.
Except here, where the problem isn't appears as the most significant problem of this update, but a secondary problem that Microsoft admitting about its existance, I didn't found any source at Google when searching about this update.
Anyone encountered thees problems as well, after installing this update?
 

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