Thanks for your comment and sharing your highscore :D
There are a few mechanics and some of them are not explicitly written in the description. For example, bigger distance between squares makes triangles moving slower. It could seem to be easier, but because of the distance it's more diffcult to keep your eyes on both squares. Closer squares are easier to look after, but then triangles move faster.
Today I got to get 542 score (earlier I was getting around 200-300).