It is indeed 126.96.36.199. I tried 4.5 but not all of meta data products were showing up so I had to go back to 4.0.3 I did not get a chance to test M4.
What I have to do now is set up the M4 character I am working on in DS3A and then move it over to DS4 to use the collision detection and pose and render.
I take it your are refering to Version 188.8.131.52 which is a PITA when it comes slowing down like this. I get it all the time.
I think the latest Beta release 4.5 RC is much more responsive though I haven’t seen it for myself.