Consider optimizing draw for BIG signals

[kitizz]

For example, when looking at an entire sound signal at any respectable sample rate (e.q. 48kHz), there are too many data points for the screen to even render.

When a signal becomes this squash, there should be a way to draw it better.

Probably the best way will be to group multiple data points into the same column of pixels and that column of pixels should be filled (i.e. a line) from the min to the max value of the group.