Do you get such high temperatures when gaming and doing ordiary stuff?
If yes then repaste if no then don't worry about it.
Stress test is there to test stability its not there to test how high/low your cpu can reach in °C.
It puts synthetic stress on your cpu that you won't reach in everyday use.
Asus Rog G750JZ
Screen: 1920x1080 17.3'
CPU: Intel® Core™ i7-4700HQ (3.4Ghz @ -70mV)
GPU: GeForce GTX 880M 4GB (OC +125Mhz Core, +600Mhz Memory @ 1.062V)
RAM: Samsung 32GB 1600MHz
Storage #1: Samsung Evo 840 250GB
Storage #2: Samsung Evo 850 500GB
Storage #3: Seagate Barracuda 2TB
Storage #4: Samsung Evo 128GB MicroSD