Look at the last post in this thread to update to 3.5.8.0. https://community.syncromsp.com/t/version-information-for-syncrormm-and-splashtop/11437/3
Also an announcement from Syncro. https://community.syncromsp.com/t/rmm-splashtop-version-3-5-6-0-intermittently-consuming-cpu-and-or-crashing-work-around-included/11534
Splashtop 3.5.6.0 has an increase in logging, which is causing AVs to go crazy. Wouldn’t be surprised if it’s causing your issue.