frame-rate

US /ˈfreɪm ˌreɪt/
UK /ˈfreɪm ˌreɪt/
1.

tỷ lệ khung hình

the number of frames (= single pictures that together form a film or video game) that appear on a screen every second:

:
The frame rate is close to 30 fps, making the game very smooth.