You’re probably gonna get better answers on the general forum rather than the specific forum of an RP realm. Knowing WoW though, you’ll be able to handle it as long as you keep those graphics down.
What do you mean by ‘delayed’? As in slowed down? I wouldn’t recommend having WoW open while you’re using Photoshop or similar, if that’s what you mean. The integrated GPU it has isn’t very powerful so the game might not run great to begin with. But while the game and the app aren’t open it shouldn’t make a difference.
Also I’d recommend you set the Battle.net app to close after you launch the game.