So just like the title. I am having an issue where every time I open the client it resets everything graphical to the default. This is extra annoying on the graphic settings that actually require a restart to apply.
Right click WoW -folder or config.wtf -file, select properties, un-check "Read-only" and Apply.
If you get prompt, Apply changes to this folder, sub-folders and files and click OK.
Or do the same for config.wtf -file in your WoW/WTF -folder.