Hmm, honestly 90c is normal for that card (At 99% usage). I mean hopefully in games, you won't even see 80c.
 
But if I were you, I'd make an aggressive fan profile.
 
I see you have it something like 40% at 60c. 
 
I would have it like:
70% at 60c
80% at 75c
90% at 85c
100% at 90c
 
That should help. Yeah, I know it'll get abit loud, but atleast your fan is getting cooled a few more degrees. And like I said, hopefully with those fan settings, you won't see anything over 75-80c for sure.
 
If you don't know how to change your fan speeds at certain temps. On that graph, make sure you click the "User defined custom fan control", and then just click on the graph, where you want the settings. For instance, to set 70% at 60c. Find 60c, then go over, and mark it where 70% meets 60c. And so on.
 
Hope I helped! But yeah, no worries. It's kinda normal for that card. They run hot at max, air cooled. But they can also handle really high temps (Even though the cooler, the better). But I use to fold with my GTX 560 Ti at 85c, 24/7 with no prob.