Visual studio freeze when exception throw

Hi,

Since 3 weeks when i debug unity with vs studio and exception is throw, visual studio freeze and i have to force debugging to stop. I use unity 2017.1.1, vstu 3.4.0.2 and visual studio 2015.

I cant understand it work fine before,
I try to reinstall old version of unity and vstu , same problem. I could uncheck the Exception support (experimental) but the option is so usefull.

Did you already have these trouble ?

Similar problem is here.
When I set a break point and debug, Unity editor freezes.
(unity 2017.1.1f, vstu 3.4.0.2)