Wagon is too slow.

I have a underground system created with railway and powered railway, the problem is when I put a wagon into them. When I am trying to move, it goes like frame after frame, I mean, it is not going smoothly, seems like lag, but everything else in the world works fine.

Any idea about this?

Thank you very much

How can I see it?

Are you asking for this?

[26Jan2021 11:45:36.320] [Server thread/WARN] [net.minecraft.server.MinecraftServer/]: Can't keep up! Is the server overloaded? Running 4834ms or 96 ticks behind

Okay, I just found it, TPS 0.6

Solved! RandomTickSpeed was the problem