I have an object - player - which is moving X px ahead each update (updates based on device FPS). From my results, to get average same player speed on all devices, is to do calculation screenWidth / averageFPS. This should give me speed, that player reaches mobile screen width for one second (note my game is in landscape mode). But it doesn't, it was significaly faster on Z3 Compact (720x1280; avg. 60FPS) than on tablet A5600-F (800 x 1280; avg. 62FPS).
How to get correct speed?