The sound in game and out is lagging behind the actual events its paired with

So let's say bot lane gives first blood. The announcer doesn't come in until around 3 seconds later. Or when you team fight and everyone dies. Only around 2 allies have been slain are announced and then ace. Also when your out of game and in client there's these noises like when players leave an end game lobby or type in chat, but there's nothing up. (Pretty spooky, slightly annoying sort of like ding dong ditch). Basically I was wondering if anyone else had these weird lags and if there are solutions or if it's just a little bug with my client. It's not huge but I'm hoping to get some sort of solution. Plus it affects game play a little because of the lags in the announcer. One game I didn't know two of my team mates had died when they went into the enemy jungle and I was going in to save them. (I have sucky map awareness, I know). Their deaths were never announced and when I went in the enemy team popped me and I shed a lil tear when I wasn't announced too because I felt like I was a little left out ;-;