FINALLY manged to solve the constant crash issue ! ( details here )

Well well well , miracles exists , after almost 2 weeks unable to play more than 20 seconds before systematically crashing , I NOW CAN PLAY ( just ended a 2H session without any crash ! :D ) 
SO , here is what i done , if it can help to solve this constant crash issue : 

> I done the last windows update ( the one released yesterday ) 

>Then i done the last Nvidia Geforce game ready + Audio update ( released yesterday or 2 days ago , the  version 581.57 ) 

>Then i completely removed Skate. from my computer ( on steam > uninstall ) and re installed it from steam

And it worked , i precise i had disabled crossplay a way before and it was still disabled when i re installed , i started with lowest graphics settings possible , but even in ultra it work perfectly well. 

I hope it will help some to solve this hell of a issue ! ^^'

EDIT : oh and i turned off G-sync , it was causing issues with the steam overlay so i had to turn it off , maybe it can help too , i d k.