Some people cant reroll as new devices got already pre installed win11 ,
I had my update to win11 , had to rollback to win10 due to same client closures due to kernel error ,
Sadly once I rerolled to win10 i had inherited that error even on win10,
So I went back to Win11
What I did to work around , to minimize random crashes,
1) Go to nvidia(or radeon graphic settings)
2)Reset L2 to default setting in graphic drivers
3)Go in game settings and open detailed settings,
4) Things to switch of in game to minimize white coloured shader crash:
a)Shadows
b)Out of Focusing effects
c)Shader
d)Reduce brightness to lowest you can "up to your eye how low you can go"
e)Do not use optimize performance (as win11 does not dedicates resources to this function and puts app to sleep once its dropped down to task bar)
f)Do not use lower detail settings
Hope it helps guys , It worked for me for a month now once I will get more time to find out what triggers random crash as just kernel report is not enough to investigate I post a solution how to fix this on win11,
NCsoft is known for a slow calls for upgrading game, just remember how long it took to get win10 capability...