I downloaded OpenMPT 1.29.15, I installed it, but when I listen to a module, it becomes slow (it does not affect the sound, it is only visual), the previous version this did not happen, why?
I cannot observe any difference here, and there shouldn't be any. Are you sure that you are using the exact same settings in both versions? If you run both versions side by side (using the same settings), is the difference still observable?
I already solved it, it was simply that I had put everything to the maximum in the "Sound Card" tab, sorry for creating this.