Wow crash after 10-15min of gameplay

havent played on the weekend, i just logged after the weekly maintenance, my game crashes after 10-15mins with a “insuficient memory” error, crashes and shut down. Anyone else having this issue?

“Not enough memory. Please refer to https://battle.net/support/article/6926 to find out how to reduce your memory usage.”

it only happens in valdrakken.

ps: it seems it has been fixed the moment i restarted my pc. wierd