Glad you enjoyed it! A shame about the lag. One thing some people have found is that running the game in small-screen mode can help a bit with the frame rate.
The slight quirk with the movement is that you can't stop in mid-air without using the down-smash, the challenge with that is that you have to time the smash at just the right moment, otherwise you will plummet into a pit of ink.
Currently, if multiple objects are layered on top of each other, you can only edit the object that's on the very top layer. It would be cool if every time you click (slower than a double click) your selection moves down one layer.
I do love how the gameplay inspires you to think a lot more about positioning, and it seemed to work well with me. I will say one thing that caught me was the fact that the enemies could 'see' through the walls.
Perhaps one way you could rectify that is, when the player moves into an enemy's line of sight, have a raycast check whether or not there is an obstacle in the way.
