On my private Minecraft server every thing was working properly but when my friend joind the server and started building his house server started working
very slow. I restarted the server and teleported to his house and the server started working slow again. World works normaly on singel player. When i try to type command it responds from 10 to 20 seconds. After joining the server and standing in the area i tried to type /lag and it showed that there are 266000 entities and there are 20 tps but later it shows normal amount of entities and timings show that in reality there are 0.14 tps.