Your Experience with Server.pro and other advice seeking?

I have a server on server.pro and im trying to update to 1.14 spigot but its laggy as all hell. So i went back to 1.13.2 craftbukket.

I was wondering if what people’s experience was with Server.pro,

Everyone tells me to check out creeperhost but their website doesn’t work at all pretty much and… well that’s an issue. so I can’t really even see what they offer.

I have 21 people on my server and I want it to run smoothly,

Right now with server.pro I have 6gb of memory 3v cores (whatever that is) running on Intel i7-7700K OC – 4.7 GHz / 5 GHz with 40GB of Disk

That should work, right?