Big worries with the OneSync/ My server load is infinite!

[Nimoa]

Quote from The OneSync EAP and you :

@system

• Launch the server with the added argument +set onesync_enabled 1 . This probably won’t work in the configuration file. People are claiming it will.

You’re not meant to add +set onesync_enabled 1 into your .cfg but in your .bat like this :
C:\Users\wew\this\is\your\server\path\run.cmd +exec my_cfg.cfg +set onesync_enabled 1

Try this and report if you still handle issues.