Lead Developer
Caching plugins make it near impossible to set a width with an option, which sucks for those of us not using any caching plugins.
You can however tell the mobile menu to kick in at any width you want with this CSS: https://gist.github.com/generatepress/c23aef2d05807c39bb32
Just change the 768.
Be sure to star the gist as it will change in the future as the theme changes, and you’ll need to update the code.