[stirner]

> When dragging items on the screen, for example, users perceive latencies as low as ~2ms

This seems doubtful, given that even a state-of-the-art 240Hz screen only refreshes every 4.16ms. I guess they could compare dragging on a screen to dragging a physical object, but that would still be comparing 4.16+ms latency to 0ms latency, which doesn't explain the 2ms figure.

[alimbada]

> This seems doubtful

Ever tried playing a fast paced game with VSync turned on?

[stirner]

True, the next frame can start getting drawn before the last one, but every desktop compositor I know of uses vsync.

[jerrre]

you could say with a 4.16ms refresh rate it takes on average ~2ms until the next frame?