Animate Stroboscope Frequency

Hi guys,

I want to create a stroboscope effect with increasing / decreasing flicker speed (=interval).

The problem is when I animate the interval from let´s say 0.5 to 0.2 the stroboscope doesn´t create a regular change of speed but instead flickers in a kind of random fashion - although the value changes regularly through .49, .48, .47, .46 etc.

But how do I get an even distribution of speed? I didn´t think it would be that complicated.

Reproducing it with an turbulent nouse & mosaic effects doesn´t really help because brightness changes too randomly and because I don´t have a duration value with this method.

Any ideas?

Thanks in advance!