The install itself an extremely low over-head plugin for SCCM, but it could kick off processes/jobs from SCCM that can take up CPU.
Is there any chance you set Patch for SCCM to publish all available 3rd party patches?
In Settings > Schedule. Setting it to Publish bases on a filter will cause a lot of downloading, publishing and syncing happen.
Are you sure it was Ivanti Patch that caused the problem? There is a known issue related primarily to the Windows 10 1607 updates that causes high CPU and memory usage. More info here: