Hi I've bought me a root server and yeah everything was fine(the server was "perfect") but then i installed world guard and my server has before installing world guard 20tps!! but after i installed it my has between 5-0.5 tps. I tested my server with these plugins installed: world guard, essentials, lag meter. But now worse 3-0.5 tps. I'm running an intel i7 2600 with 16gb ram. Whats going wrong?? Edit: I deleted my map :-( and now its working again.. but in the server.log there was no error or so.
So you deleted your map before testing anything? Anyways try NoLagg or pTweaks, or try with no plugins and see if you just bought a crappy host.