Hello, I was in a Zakum expedition the other day. When the boss enters stage 3, it's textures started looking extremely weird. Instead of a crumbling Zakum, it sort of disappeared, and looked like missing no from Pokemon at times. It was all good and dandy, but when it reaches around 30% health, my game crashed. The error said something about a lack of memory. Is it something wrong with the game or my PC?
I'm guessing you are using an Nvidia graphics card? If so, you need to either use a virtual machine program within Windows or use the graphics change shortcut every so often. My solution was to buy a cheap $20 Radeon card to use for playing Royals with.
At the 3rd body, hit esc, go into settings, move the slider for graphics up one bar. It should be on lowest for Zakum. After about a minute, move it back down again to lowest. Just repeat this until you kill it. This has worked for everyone I know.