It's been years, if I have access to the source code this will only take 3 seconds to change the max. variable.

I am researching about more than 5 sec in auto animate but i think Xd cannot make the frames for more duration, but there are some creationary ways for solving this problem.
you can devide yor motion in more artboards or record your screen and change the speed / duration in Adobe Premiere or Camtasia Studio...
AHS

I quote this. It would be useful.

Any news on this feature?

Likewise, have to echo this request! Trying to teach an interactive design class and many of the students concepts rely on needing longer time periods for auto-animate transitions or loops - forcing us to explore other software.

I also chime in for this one, and I'd like to add that the stated numerical value should respond to the up and down arrows as anywhere else in the application: increasing and decreasing the value, in stead of going up and down in the popup list (with values going the other way around...)

Sadly can't use XD with such a short time allowance.

I agree! I am currently trying to make a title scroll across the art board (kind of like when you have a song name scrolling across the screen because of its length), and 5 seconds is way too short.

Me too!! It should go as long as you want. I am also trying to design a slow-moving animation in a cycle, a 60-second animation to be precise. The 5-second limit makes me have to use other software to do what I need to do