Is 4 ms on a 4K ips monitor good for gaming?

Solution
Because you see faster than you can react. Response time has to do with ghosting, how fast the pixels change color. You could consciously notice a flash of light that is 4 ms. Remember the spec is best time, average will be higher. Usually one stating 5ms shouldn't get too high on average and have ghosting issues but you should always check reviews. Tftcentral is the best monitor reviews but they can't possible have all models so most of the time you just have to go by what other users say.
response time is really subjective. IMO anything less 6 to 8ms is good, still noticeable, but only when you're really looking for it. I agree that 4k gaming might be out of range for a single 980ti. But I would go with a 1440p ultra wide monitor.
 
Because you see faster than you can react. Response time has to do with ghosting, how fast the pixels change color. You could consciously notice a flash of light that is 4 ms. Remember the spec is best time, average will be higher. Usually one stating 5ms shouldn't get too high on average and have ghosting issues but you should always check reviews. Tftcentral is the best monitor reviews but they can't possible have all models so most of the time you just have to go by what other users say.
 
Solution