About flashpunk

Hello, I found this library called Flashpunk and I would like to know if it really is worth using it.

the section that says collisions has an image that makes my pixels move and its not even animated lol http://useflashpunk.net/ but Idk Id just type in flash as3

I mean particles section

its like moving or something or is it just my screen?
https://i.imgur.com/VOKAne0.png

Wtf!?

You see it flickers?