Gatling Response time > 1200ms

I want to know can i edit the gatling somehow to increase max response time from 1200ms because currently when i perform the load test for 10000 users most of the requests fail because of t > 1200ms for that requests. Can i increase the response time so that i can get maximum results and avoid the requests from failing?
I have attached the screen shot of gatling script result.

Hi Sohaib,

You can try use the gatling.conf file to modify the higher bound for the requests response time. In this link you can find the file: