use slightly shorter animation time than overall duration

[Tone866]

I noticed, that some animations doesn't come to an complete end, like one example you provided:
syscgo -effect beam-text -file assets/SYSC.txt -auto -display -theme nord -duration 5

It looks like the animation time is the same oder higher than the display time.

So it should probably changed, so that it's always lower than the duration time (animation could play faster).

[Nomadcxx]

Thanks for this tone, good catch. The issue seems to be that the -duration timer counts from the start of the animation, but the beam-text effect has multiple phases (beam animation > final swipe > hold) so when you set -duration 5 which is only about 100 frames-ish, and the beam animation phase usually takes longer.

[Tone866]

It looks like this behavior isn‘t beam specific, I noticed that on other animations, e.g. matrix-art as well.