I would suggest a good cooling pad, something like this thermaltake one for $20 will make a big difference.

https://www.amazon.com/dp/B00FPR8FLY?tag=amz-mkt-chr-us-20&ascsubtag=1ba00-01000-org00-def00-other-nomod-us000-pcomp&ref=bit_pcomp_ask_simstreat_c_sav0

I've used that cooler on desktop replacement high end gaming laptops (i7 4790K - yes it's a desktop cpu in a laptop and GTX 980m) and it helped to lower the temps ~ 8 C.