My wife and I play on the same server same internet. But she is lagging extremely badly. Anyone else having any issues?
though im not an expert of any sort i think you need more details like what server what time what specs you using for other people to help you 
I’m starting to put the blame on amazon or ISPs at this point. I’m doing route traces using PingPlotter and my route is stuffed with nodes that drop 100% of my packet or drop large amounts of them…which pumps my ping up. It’s still low compared to people in AUS playing on the SEA servers, but the spikes are annoying…not attacking when spamming keys is tiresome.