In the Delay effect window it is possible to set the delay time for left and right channels to a number of lines in the pattern, though they wouldn’t change if tempo changes. I thought it might be useful if a feature is added to the delay effect to make the set delay time change with tempo, one of the many uses can be creating echo effect for notes in songs with changing tempo… maybe a LOCK checkbox will do.
We need a “beat delay” which will always be in sync with the tempo, thats for sure.
For now you can “resync” the delay times on tempo changes, by triggering the pattern effects X50Y and X60Y.
(where X is the position in the chain (1 if you have the delay as the first effect in the chain) and Y with the number of lines).