Why my nexus 6p's benchmark scores is very bad?

[Dinesh Purohit]

Geekbench 3- single core:-694
Multi core :- 2914
Antutu:- 39994, why it so less, than 810 soc's expected results
But not seen overheat issue

 

[UJ95x]

Welcome to AC!

Benchmarks shouldn't really matter. They are not indicative of real world performance. If you're not having any actual performance issues when you're using your phone throughout the day, your phone is fine