Can I use tracker for nDisplays with only Cluster Events?

Hello, I just saw the release notes for the 4.22. We are using the Optitrack. We have the Motive but we have different project and we need to keep lower version of VRPN there so using nDisplays with builded VRPN in Motive is not accessive.
Im thinking to use Optitrack plugin for 4.21 and Cluster Events for tracking. Is it even possible to use this events to tracking? On documentation of nDisplays I just saw VRPN for tracking. Thank you