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Windows 7: dwm.exe lagging the computer with 20% cpu usage

20 Jun 2016   #1
smarenwolf

Windows 7 Ultimate x64
 
 
dwm.exe lagging the computer with 20% cpu usage

Cheers

This computer has been set up new about a week ago.
All drivers (including NVidia, which sits at 368.39) are brand new (downloaded from the ASUS support page... besides NVidia), according to Windows Update, there's nothing left to do (means, Win 7 is on SP1).

Nevertheless, once I start _some_ games, dwm.exe spikes up to 20-25% CPU usage (overall usage is usually about 5-6% higher) and everything starts lagging. Typing isn't instant, Youtube is laggy, moving windows is laggy, etc...

Funny enough, this doesn't even need a game _running_. For example, I just had "enough" of this crap when I started Stellaris. Similar to other Paradox-games (Europa Universalis 4, CK2, etc), the game has a launcher (which is used to activate mods). The game itself isn't even running... Still, as I'm typing this, everything is laggy.
And the CPU sits at something around 23-27%.

Please, this can't be right... :/

Edit: Windows just gave me the "windows is slow, disable aero?"-window... Thought "sure, can't hurt."
Now nothing lags... But again, this can't be right/the solution.
I mean, this computer is powered by a (very slightly) OC'ed i5-6600K and a ASUS STRIX GTX 970... Aero isn't that demanding o.O


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 dwm.exe lagging the computer with 20% cpu usage




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