When your computer is being sluggish, you need to free up ram by flushing it. The usual way is to reboot, but try this first before rebooting.
In Windows:
Click on the “Start” button.
Select “Run”
Type the following and press “OK”
%windir%\system32\rundll32.exe advapi32.dll,ProcessIdleTasks
This should clear your ram without rebooting.
