60fps is always going to feel smoother than 45fps. In 66ms you’re getting around 4 frames while using 60fps but only 3 frames with 45 fps. This is good for games with a lot of motion, such as racing games.
However the input lag depends on the sync between the game and the monitor. The higher the monitor frequency, the sooner it “asks “ for a new frame. Having a higher frequency means it waits less time before asking for a new frame .
The max input lag is dictated by the monitor frequency. For example, a game that runs at 45fps (and has a frame time of 1s/45= 22ms) has a maximum input lag (the delay between the frame being ready and being displayed in the screen) of 11ms because the screen is checking for a new frame at 90Hz (1s/90=11ms)
60fps is always going to feel smoother than 45fps. In 66ms you’re getting around 4 frames while using 60fps but only 3 frames with 45 fps. This is good for games with a lot of motion, such as racing games.
However the input lag depends on the sync between the game and the monitor. The higher the monitor frequency, the sooner it “asks “ for a new frame. Having a higher frequency means it waits less time before asking for a new frame .
The max input lag is dictated by the monitor frequency. For example, a game that runs at 45fps (and has a frame time of 1s/45= 22ms) has a maximum input lag (the delay between the frame being ready and being displayed in the screen) of 11ms because the screen is checking for a new frame at 90Hz (1s/90=11ms)