A:AnswerThis is a 75hz monitor but FPS is determined within the game settings. You might post your question on the Acer Community where there are many users that post questions and offer help and advice on Acer products. The link is: https://community.acer.com/
A:AnswerThis monitor is not 4K- this has a native resolution of 1920 x 1080. If you are looking for a 4K monitor, look for one that supports 3840 x 2160 resolution.