not able to hit targetted QPS through gatling

is it due to Gatling 2.3 version? that the targeted qps is not reaching, I am running it through 9 gatling-slaves using jenkins,

still I am able to achieve only 70% of the targeted QPS,

my target is around 10000 QPS.

any help?

You shouldn’t need that many hosts. Your problem is most likely they are way too small or you’re saturating your network.