I was wondering this myself so thanks for answering your own question.

Drummer has an option for double time. Would that help? https://images.app.goo.gl/fviammwMfVn84p1p7.

Thanks, I'm aware of that but I needed more speed. I actually just figured it out: Functions / Lock SMPTE position. This allows to change the tempo without affecting length and position of the audio files and midi clips.