For 32 ESX Hosts I recommend you give the nworks VM 2 x vCPU. The SCOM agent in particular will benefit from multi-threading with dual CPU.
You may also find that 3GB RAM is required (this depends on various factors, but if you are also seeing high memory usage then I advise to increase it
Please also just check you have made all the changes listed in the Admin Guide - there are overrides for Monitors, and Rules, and also registry changes. See pages 139 - 141 of Admin Guide http://www.veeam.com/MP_VMware_OM07_Adm ... 4.5_pg.pdf
Are you running our latest version MP + Collector? Version 4.5 has scalability improvements in the data feed into SCOM that will reduce CPU usage.
Note - if you download latest 4.5 MP package,you will receive an 'overrides MP' as well as the core MP. The Overrides MP is a pre-packaged set of overrides for Health Service/Monitoring Host Private Bytes etc. It saves you from making those changes manually. However you should have the 4.5 MP (and Collector) installed before trying to use the Overrides MP, as all components should be from the same package.
nworks Product Manager