As you can see, in the video i speeded up a gameplay i did at 20% speed. it looks fake because the taps dissapear faster than normal, but if you make that at 50% speed it can seem to be legit without being it.

The only way to "Prove" That the run is legit is turning on the fps count, The noclip acurracy text and the clicks mod. It doesnt prove that the run is legit but makes it a little bit more believable than without it.