Montxo,

I've created a small, song file that switches from normal time to double time and then switches back to normal time.

The song was created using the _SLOWBAL.STY.

The song has a memo explaining how I used F5 settings to switch tempo.

I have placed the song file and an audio file of the song online. It is available +++ HERE +++

If this doesn't help you then please create a SGU song file that has the problem.
Then upload the song file to a cloud based storage location like Google Drive, DropBox, Box or 4Square. Finally post a link to the song file here.

That will let us see the problem you are experiencing and we will be able to offer better suggestions.

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Jim Fogle - 2025 BiaB (Build 1128) RB (Build 5) - Ultra+ PAK
DAWs: Cakewalk Sonar - Standalone: Zoom MRS-8
Laptop: i3 Win 10, 8GB ram 500GB HDD
Desktop: i7 Win 11, 12GB ram 256GB SSD, 4 TB HDD
Music at: https://fogle622.wix.com/fogle622-audio-home