DAoC crashing with no error message

[Taggys]

Getting a frequent crashing issue when playing DAoC only, pc just seems to close DAoC in NF after about 1h30mins or so. Sceen goes weird and lose all my windows and just see character this is after a few second freeze then daoc closes itself! tried a file check etc and my pc can easily handle daoc ! i can run 2x acc anywhere in the game except for NF and even without dual logging i get this issue! only crashes in NF

Please help!