So after browsing hours for solution it seems i finally fixed it
I underclocked my gigabyte windforce 780ti core clock -105mhz and memory -170mhz with msi afterburner, forced the fps to 40 with msi afterburner and opened the fps lock ingame, also I turned of the nvidia stream shit for shield tabel and put the priority of witcher 3 to High in taskmanager, playing the game in mostly high settings, some things like water quality is on ultra, fullscreen 1920x1080
I7 4790k
GTX 780 TI Gigabyte Windforce with the latest driver(352,86)
8GB DDR3 Ram
MSI Z97 Gaming 5
256GB SSD Crucial MX100 with win 8.1 64bit
---------- Updated at 08:35 PM ----------
So after browsing hours for the solution of the random freezes and crashes it seems i finally fixed it
I underclocked my gigabyte windforce 780ti core clock -105mhz and memory -170mhz with msi afterburner, forced the fps to 40 with msi afterburner and opened the fps lock ingame, also I turned of the nvidia stream shit for shield tabel and put the priority of witcher 3 to High in taskmanager, playing the game in mostly high settings, some things like water quality is on ultra, fullscreen 1920x1080
I7 4790k
GTX 780 TI Gigabyte Windforce with the latest driver(352,86)
8GB DDR3 Ram
MSI Z97 Gaming 5
256GB SSD Crucial MX100 with win 8.1 64bit
cant edit my first post sorry