okay we are in 2k18 and some people doesn't know how to put this into their cfg 

first of all if you have an app like notepad++ ,atom ,whatever 
 (i use notepad++ ) 
 
 right click on your cfg and put the tweaks inside it... 
 
 save and make your cfg read only...if you want to remove them uncheck the read only and delete the tweak line and tadaa you just did it and removed them
 
 
 check screenshots to understand