My system runs kind of laggy and I don't know what to do ;)

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http://chakra-project.org – Post as much as you can think of you've done in the form of customization.  What themes used, what plasmoids, were did you get any applications from that you use.  Did you get the nvidia driver from Chakra, or downloaded from nvidia.  Can you replicate the lagginess in live-mode, starting the latest ISO with the non-free option, if not, then you know for sure, some of your settings/apps is off.Checked logs for errors?  In your home dir, look for xsession errors file, in /var/log for the xorg log, and check in sudo journalctl.Pastebin the result of  'hwinfo -- (HowTos)