With ambient temp of 22 degree celsius, this card reaches about 70 without thermal pads. Your card has thermal pads and your ambient temps are 30, so your temps of 77 is fine. Actually, the card will go upto 82 before it maintains that temp by throttling down a little bit. So, dont worry and enjoy gaming. My Zotac 1060 keeps hitting 82 all the time and I have no issues with performance or longetivity of the card as 82 is defined by the company as safe temp and the technology doesn't let it go beyond that.
http://www.tomshardware.com/reviews/nvidia-geforce-gtx-1060-graphics-card-roundup,4724-6.html