# AHDSR and instrument sync issues **URL:** \ **Category:** FMOD Studio\ **Created:** [December 19, 2022, 12:38pm UTC](https://qa.fmod.com/t/ahdsr-and-instrument-sync-issues/19658 "2022-12-19T12:38:31Z")\ **Posts on this page:** 1\ **Showing post:** 11
**Author:** ![Alcibiade](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/alcibiade/32/4284_2.png) [@Alcibiade](https://qa.fmod.com/u/Alcibiade)\ **Post date:** [January 4, 2023, 6:23pm UTC](https://qa.fmod.com/t/ahdsr-and-instrument-sync-issues/19658/11 "2023-01-04T18:23:47Z")
Ok. You can’t do that by punching-in nested events, cause nested events are async, which means they always start at their beginning. You can use nested events but you’ll have to play them from the beginning, and automate the volume. Note that the synchronisation between tracks will never be checked anymore, so it can be somewhat risky ; it’s safer to use synced instruments. Either ways, the problem is the volume automation (or AHDSR). In fact you’ll be facing the problem that FMOD lacks an essential feature, which I asked for almost 2 years ago, and which is the most asked feature on this forum : > [@Suggestion: seek speed on... everything!](https://qa.fmod.com/t/suggestion-seek-speed-on-everything/16947): > > We already talked about the limitation of discrete parameters for smoothly changing continuous values. An improvement is planned, from what I understood. I think a great improvement, resolving this case as well as others, would be to have a configurable seek speed on continuous settings themselves (especially volume). The seek speed on the parameter causes some problems: while changing parameter value, we often want some things to happen immediately (trigger a sound, transition somewere else on… and > [@Crossfade On Labelled Parameter](https://qa.fmod.com/t/crossfade-on-labelled-parameter/18189): > > Hey Everyone! Hope you all had nice holidays! I’m trying to implement a weather system and the programmers and I have decided to use the labelled parameters for ease so clear, rain, snow etc. I have my audio in the parameter sheet as opposed to the timeline and am switching between each value but there doesn’t seem to be any kind of crossfade. I’ve looked into AHDSR’s but they seem to only work when triggering the event for the first time only and not switching between values. Anybody have any… You’ll find some workarounds on those links, though. --- _[View the full topic](https://qa.fmod.com/t/ahdsr-and-instrument-sync-issues/19658)._