Originally Posted by JB-007
Thanks for your answer
And do you need to reboot device each time you change settings?
No, usually not. You just turn the tweak on with the ON/OFF switch (after selecting the app), then setting DPI, resolution and tablet/no tablet mode. After setting this, press save and say yes to close the app. Then press play button and it should open the app with tweaked settings.
If somehow the app is not changed, try opening app settings and manually force close it. Then reopen.
It's not always that results are shown immediately. So sometimes you might have to reboot (just to be sure). Typically for system files/apps.
Remember to get yourself a nandroid backup of your system before messing too much, though