combat shockwave and blur 1.6.640 - source/stop?

[7531Leonidas]

Since moving to SSE 1.6.640, some combat sequences (mob of bg, dragon flyover, initial Companions v. giant scene) start off with some sort of shockwave effect that blurs the screen and slows the action. Even occurs when I am in the vicinity of combat, w/o being involved/targeted.

 

Three questions:

 

Is this a 'feature' of SSE?

 

Anyone know the mod that does this?

 

How to stop the effect?

 

I was hoping that someone could save me a LOT of detective work. I think that I will try to blindly click on parts of the scene affected by this effect the next time it happens, if there is no response.

 

Thanks to all who read this!