SAV Rtvscan CPU spike in VMware environment

We are having issues with SAV 10.1.5 on our servers that’s running in our VMware environment. We are running ESX 2.5.3 and we are running schedule scan not real-time scan and we seeing spikes between 3-15%. We have a temporary solution but need a permanent fix – disabled tamper protection, disabled start-up scan and removed files left in the lvdp folder then restart services and it goes down to 0% but a couple of days later it goes back up. As anyone exprience this kind of problem and how did you fix it?