Hello. This topic is including tips for increasing performance and very benefital for beginners
First of all I always put "tick_rate 60" to my launch option. If you have lag even in your own server it will reduce the delay AMAP.
World settings and World generation settings
Twiggy trees are very time consuming to farm twigs also they require additional memory for dropped twigs and their growing procces.
Grass gekkos spawns in nature on rocky biome. They are very fast way to gather grasses but they consume extra memory compare to grass tufts.
I recommend farm your grass instead of these ram consuming monsters. Also if you dont collect all grass they drop it will lag your server.
Setting your world size to small will save very big amount of ram, it will reduce your lag and its gonna be easier to understand the game if you are a beginner.
Spiky bushes are alterantif of saplings but they damage you when harrvested also they are spareable memory place which is you will never need them.
Even in small sized world there will ve dozens of spiders. Let alone you will not need to face them all they consume unnecessary memory.
Also if you play with caves (which I recommend) dont forget to set world size small reduce spider dens and disable spiky bushes