There are some places where different methods of acquiring timestamps are used - e.g. erlang:timestamp or os:timestamp in monitoring and datastore internals.

look for TODOs with the ticket numer in code, at least in cluster-worker, op-worker, onepanel

WARNING - when clock is used to measure time differences, there can be bad reads if sync was done in the meantime - consider adding an API like start_timer, stop_timer