Hello everyone. I also had this problem since the 1.13 update. I can play every other gamemode of 1.12.2 and below, but cannot seem to run anything above it. I've tried installing/reinstalling, I've tried updating java and computer drives. I spent many a night searching and trying to figure this out on my own, so I came here for help.
I can see 'net.minecraft.server.MinecraftServer (Server thread) warn Can't keep up! Is the server overloaded?' and a Google search seems to indicate it's something to do with the arguments you're using for JAVA
What have you got at the moment ?? maybe you are trying to assign too much/little for JAVA to run or something like that
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