Rust freeze on start up (Stops answering)

Hello, it was a long time since I played rust, but I have spent a couple hours in it.

About a week from now I tried to start Rust again, didnt work. Lagacy Mode works fine tho.
Today I tried to start it again, with no success. I’ve tried to uninstall and installed the game, Windowed and fullscreen mode, tried different graphics settings. But the game keeps freezing at start up, all I see is a black screen.

Anyone who know any solution?

Im running lattest graphics driver 344.11.

Specs:
Intel Core i5 2500K 4,5GHz
MSI GeForce GTX 780 3GB OC TwinFrozr
2x4096MB, DDR3 1600Mhz
MSI P67A-C45 B3
Cooler Master HAF 912 Plus
Cooler Master 212 EVO
Corsair AX860 80+ Platinum
A-DATA SSD Premier Pro SP900 128GB
Samsung EVO 120GB
1 TB, 32MB Cache, SATA 3,0 Gbit/s, 7200rpm
2 TB Seagate Barracuda Green 5900rpm

Windows 8.1 Pro 64-bit

Acer 24" G246HLBbid LED
Packard Bell 24"

Edit:
I’m able to start the game if I dont use steam to start it… But then I cant access any servers. I just get back to the menu when joining a server.

I have had the same exact problem since last tuesdays update. i have tried every thing i possible can. reinstalling, opting out of beta updates, i have more than enough specs to play the game, 64 bit 8 gb of ram windows 7, i also deleted the unity cache. its hopeless im hoping to find a fix soon