Now this is very interesting. When you say ASW are you talking about interpolating frames to help keeping the framerate high (like oculus do if I'm not mistaken ?) or are you refering to brainwarp ? (alternating the rendering of left and right eye to double the perceived framerate, that's it ? I also suppose both brainwarp and ASW could be combined if brainwarp trick really works).
Back to interpolated frames, do you know about SVP (Smooth Video Project) ?
This is framerate interpolation software for video/movies and it works really well (and is GPU accelerated).
Initially this was a community work based on avisynth filters. Then the idea became the SVP software (you can still see the avisynth scripts in ffdshow when using SVP software) which refined the method, added a userfriendly interface with quality presets, and added the GPU acceleration support.
If this may be of any interest to you to help you developping your own ASW I could check where this avisynth method was discussed, there were A LOT of technical informations shared in these forum discussions about framerate interpolation through avisynth filters.