I work from home and have done so for nearly a year at this job. My company uses VOIP and I have been having issues with it. I've been running around in circles with my ISP...they insist there is no problem on their end and are saying it is the vpn. I use a vpn on my work computer, but not on my home computer and I've tested speeds and pings on my home computer, so it's not vpn. Will running a speed test and a ping test at the same time cause the pings to fluctuate to 100ms and more??? My boss says it should not do this, that I should be able to check my pings and speed at the same time. My cable provider tells me to test my speed on their site, but my boss says to use speedtest.net. There is a huge difference between those sites in speed and the speeds do fluctuate as much as 40 or more points! I am getting nowhere with my ISP and there are no other choices in my area. They keep insisting there is no problem on their end and I should have no issues with VOIP but I am having issues with it. Both my home computer and work computer are wired. I have a second desktop computer (WiFi) and a Chromebook as well as cellphones and tablets that access the WiFi but while I'm working, none of that is really being used. I've tried bypassing the router and plugging directly into the modem....same thing. My ISP replaced all the wiring, gave me a new modem, a new router, etc....and continues to insist there is no issue. This is so frustrating and I'm about to lose my job. Any thoughts on this???