Delayed frames

[nvbln]

Some arbitrary frames take longer than the usual 1 / scanning frequency time. See for example this graph:

The deviation between the expected value (0.5, 0.2, and -0.1 respectively (every plane is deducted by -0.3 such that they are all visible)) is clearly visible. There does seem to be a pattern in the orange plane, but otherwise nothing is known about why this happens.