Optimize SynOutputService
Configure Antialiasing to Normal - see chapter Publish the SynOutputService
This setting improves the result when using uploaded data and map export with markups.
WebOffice plot in the component services
Adapt the properties of the WebOffice plot component service - see chapter Adapt COM+ Applications
It is recommended to set the pool size to 3, the memory limit to 300000 and the expiration timeout to 1 minute. In case the memory per instance exceeds this value, it will be recycled after the expiration timeout.
Increase maximum memory for the Server Object Extension
If the output does not succeed caused by some memory issues, try to increase the maximum memory - see chapter Increase Maximum Memory for SOE
Optimize MXD
Optimize the ArcMap document with Mxdperfstat - see chapter Optimize the ArcMap Document with Mxdperfstat