Where are you located -Belgium
Are you using a VPN? -Yes and No doesn't matter it lags when server is heavy
How frequent is the latency you're experiencing? -When server is heavy
Where and what are you doing in game where you experience latency? -Farming and XPing
What I noticed is that when server is heavy the mobs spawn rate is slower it takes more time for a mob to spawn and servitor pets stop hitting for a small fraction of a second