I tend to drop mediocre/average games quite quickly. My time is best spent enjoying games.
If the game is a true 5/10, it won't continue to be played.
Now I might have a different scale than most. For example most JRPGs for me are 9 or 10 out of 10. So for me an average mediocre JRPG is often still a 7/10. A 5/10 would have to be truly bad in many ways like FFXIII.