Better performance cpu

my mode server 4790k 32g ram 1g lan
player 10~30 , 100000~150000 entities
sometimes to occur lag
as i know RUST supports only one core
so Xeon cpu seems to be bad. it right?
is there a better cpu than 4790k?

 

Better than the i7 8700k has not yet appeared. To that he must be dispersed.

 

Que??????