I just got a new RCA cable modem DCM425 from my ISP. My connection is really fast when I do a speed test but when I open Internet Explorer most pages load slow and some never finish loading. I've tried this on 3 computers that were previously connected fine to the internet and they all do the same thing so I know it's not software. The other problem is when I try to connect to my VPN at work it never connects. I've tried this on all three computers also. It did however connect once out of like 50 times.
Do you think I have a bad modem?