Hello, i would suggest you try 2 things and see if this fixes your issue. Firstly open your File Explorer and copy/paste-> %appdata% <- into the address bar. Look for the Guild Wars 2 folder [C:\Users[Your User Name]\AppData\Roaming\Guild Wars 2] and delete the Local.dat file. Afterwards click your address bar and replace Roaming with Local\Temp and go to the folder [C:\Users[Your User Name]\AppData\Local\Temp], in that folder simply search gw2 and delete the folder gw2cache-.... After the file and folder has been deleted simply start your launcher and it will re-download the files Then do a clean install of the latest Nvidia Graphics Drivers. Give your PC a reboot. Let me know if this fixes your problem :)