First please fix this forum posting system so I don't need to retype all I typed once again if an error occures.
Force scaling didn't work don't suggest then.aur-archlinux/spotify 126.96.36.1990-1
What is the error coming from the terminal when you launch spotify?
When is the issue happening?
What display manager are you running?
What drivers are in use?
What are the steps to reproducing this issue?