System information: 2.4 GHz Intel Core i5, 8GB 1600 MHz DDR3 memory, running on Yosemite 10.10.3, 2014 Macbook pro retina model
Sound on my computer keeps lagging, but not sound on videos or anything like that. If I get an iMessage to my computer, I'll get the message right away but it will make the sound for it 5 minutes or so later.
Same with emails. The sound is delayed to actually receiving them. I've tried restarting my computer and looking around the web, but I don't think it's my RAM, because I've only had the computer for less than a year.