Yes, in various forms up to OS X 10.11.x (on my iGPU/dGPU MBPs). They fixed one bug in the graphics card switching code and introduced a new one in the next software update.
10.11.2 or .3? .4 might help too
Waiting for my final list but apparently if my service advisor is to be believed they replaced just about everything, photos will be provided shortly
If it turns out it isn't crashing anymore, I might go ahead and send it in... If not, I guess all I can do is to hope that Apple does something.