A lot of the time I'm experiencing no lag on the server, people will be feedbacking that the server is lagging and they constantly get disconnected...
It seems like when people have connection issues their first instinct is to blame the server instead of resolving whether it's their connection, which is far more likely.
Not saying the servers are amazing, I do get lag spikes and such from the server... but it's much more likely people are experiencing lag on their end when it's "always slow" and "constantly disconnecting me."