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After update to Win10 1909 (from 1803) takes 100% CPU to load pages

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Hi, I've update finally my Win10, with the same latest FF version 76.0.1, I started to have problems. CPU goes often to 100% when I load pages, I can't see nothing for some minutes.. I need to wait, than it goes down to normal values.

Hi, I've update finally my Win10, with the same latest FF version 76.0.1, I started to have problems. CPU goes often to 100% when I load pages, I can't see nothing for some minutes.. I need to wait, than it goes down to normal values.

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he problem may be connected to the bad new driver for my Wireless AC 3168 netwtw04.sys, I got 2 times a BSOD adter wake up from st-by. I rolled back of the last year driver, seems better, I'll post here is solved