Packet Burst and Packet Loss

So, I have been having packet burst heavily when playing games online and when this happens sometimes the ping will spike for a brief amount of time.There also has been some packet loss here and there. I have been experiencing this for about two months at this point. I have recently tried solving this since it is extremely hard to play anything. I have gotten a new modem and router, replaced my ethernet cable, got a ethernet pcie card, and reinstalled windows. Nothing has fixed it. I have a tech coming out tomorrow to see if they can do anything. Has anyone else been experiencing this and has anyone gotten this resolved? I hate to but, I might have to switch to another isp if this issue can't be fixed. It has gone on for far to long and if it is just a matter of network congestion then, I will have to if I want it to be resolved asap.

Thanks.