Why is my internet randomly lagging?

AngrySoviet

Honorable
Jan 27, 2014
12
0
10,510
So I've had my laptop on a wifi connection for around 2 years now. Same router, had no problems at all. However, recently I noticed I'd experience huge lagspikes when talking to friends online or playing a game. It will stay at a consistent, normal, acceptable ping for around 2-3 minutes, then I'd experience a huge lag spike for around 5-10 seconds or so.

Why is this happening just now? I didn't make any major changes to the computer or to the internet setup.