yo! i am using this model also. bought two and sold 1, cause my wife dont like it. ok back to the topic,

its an awesome monitor with this price but i feel the brightness is not bright enough as most of time i used it for gaming, enemy hide at the dark corner can be hardly seen.(i am comparing it with my predator monitor) even i max the brightness to 100 lol.(currently use nvidia control panel to solve this issue) so far so good.response time i put standard only.

No gamma setting, I really no idea why he said not enough bright, it is crazy bright and contrast enough to me.

I can't even seen at 100% brightness setting on this monitor.