AKR_L Thank you for showing me your export settings! I tried exporting Spineboy's animation with the same settings, but unfortunately I couldn't reproduce the speed issue you mentioned.
However, it seems that you are using a very old version of the editor (3.8.99), so would you be able to try exporting using a newer version such as 4.0? The issue may have been resolved in newer versions.
If you want to export only the video without updating the Spine project version, you may find it convenient to export via the CLI.
In the CLI, you can specify the Spine version to use -u and export your skeleton. (Even after exporting, no changes are made to the Spine project file, so the project version will not be updated.)
To export with the same settings, save the settings in JSON format from the Save button in the lower-left corner of the export window, and use them when exporting via the CLI.
