High cpu usage (since Nov 2014)

[idata]

Hello!

I have Lenovo C340 All-in-One, x64, Intel Celeron, 4GB RAM. I bought it with Win 8 and in January 2014 upgraded to 8.1. This year I upgraded to 10. Somewhere in November 2014 I started having very high CPU usage while browsing in all browsers (except IE which I don't use). While downloading files or previewing image heavy sites/flash player content. It happened all of a sudden and I firstly I blamed AVG Free which had version update near that time. I changed the antivirus but the issue remained. Now after two years of struggling with that I'm almost 99% sure it is because graphic driver (which currently is from 2015 and says it is the latest one). I asked in the forum of the manufacturer but got no replies. In Adobe forum regarding Flash Player being a part of this I was told to change browsers to x64 versions, but that didn't help. In Microsoft forum I was advised to perform safe mode reboot and clean reboot. But before doing that I wanted to ask here if rolling back driver or updating with the older, original one (from 2012-2013, as PC was bought and which I have backuped) would solve my problem.

Thank you in advance!

[idata]

vessto, I just wanted to check if you were able to do the tests you mentioned above, and if the issue still persists or if it got fixed?

Any questions, please let me know. Regards,Alberto