Do you have the 128/4300 version?
Just opening metro apps, task manager,... anything. Nothing hardcore at all.
Well I checked and there were no updates available.
Strangely enough when I checked for update thru pc settings it found a bunch of them. Fist time I checked the traditional Windows update window and it said system is up to date.
I'll post the results when I get home. Meanwhile do I have to keep the SP2 connected to ac or keep discharging and charging it? I say this because it's mostly at home.
The good news is that it's apparently fixed after installing the updates. But seriously aren't today's PCs smart enough to stop charging after reaching 100%?
That seems rather strange. After I got my current SP2 about two weeks ago, there were a ton of updates. Every day there is some kind of update, if only the daily Defender edition. If your SP2 is out-of-box new, the OS, drivers, etc. were installed (or as old as) August 2013. Check the age of drivers, OS files, etc. Some should be newer. For example, the UEFI driver (under Firmware in Device Manager), is dated 12-20-2013 on my SP2.
That said, Power saver shouldn't be extremely slow, but just go into a lower energy mode when activity is minimal. For average uses, like writing in this forum, there isn't a subjective difference in the computer's performance that I notice. Maybe you should try "Balanced" or "High performance" to see how much better/faster it works, or if it doesn't the "Power plan" isn't the issue.