Hi, Right now I don't know how to preview in the viewport in blender in slow motion, This is very useful to me. There are some options but it is not what I really want:
1 - if I set the Frame Rate to custom and the framebase to 2 it does a slow motion but by skipping frames (if it is at 30 fps it set it at 15) this is not what I want, I want it smooth.
2 The time remapping tools do something similar but are very messy to setup, I dont think I understand them very well, and also have to change the frame range, it is weird just for a quick preview.
It would be cool to just have a button on the time line for example to set, x2 4x etc.
I made a tool for that in an addon im working on, but it is a hack, it works with the time remapping and changes framerange automatically, it kind of works but it is less than great:p
here is a preview of what I mean: https://www.youtube.com/watch?v=80hArmF_zb8