More information could help, OS, hardware, hook up type, DSL/CABLE? Have you tried a hardwire hook up, from router, to see what happens? Is there any change, wirelessly, if you boot to safe mode?
My laptop internet connection (wifi) recently took a huge crap. Google has a hard time loading sometimes. I was trying to do a speed/ping test, and it basically just froze right in the middle. I ran the virus scan and malware scan, and little or no improvement. The wifi on my phone works great. Any suggestions on what to look into next?