I Use Spigot 1.8.8 and the Timings are a disaster.
http://timings.aikar.co/?url=12631728

Do you have any idea?

what has this to do with EchoPet? 👯

that happens when it's on my Server. If the plugin not on my Server i have no Problems with entity. 2 Players Summon a Pet and server Laag like shit see the Timings
tickEntity - EntityBlazePet
tickEntity - EntityHorsePet

what version do you use?

lates Dev Build

i am using 2.8.0-b 52 and it works just fine, did you try that build yet?
if this wont fix it, i guess you have a plugin that is not compatible