strange my power limit is 100 in the gigabyte engine software, thats why i recommended you install it and set it to default. Your power limit was high for this card which barely has enough cooling.
glad to see better temps.
I had increased it to 122 in AfterBurner myself thats why, now I have reduced it to 110 and knocked 5c of the max temp. Core boost stayed more or less exactly the same.
Just need to run like this for a bit to make sure its stable.