Embodiments are directed towards employing a plurality of tag states to control tag suspension based on an asynchronous process that proactively monitors tag performance, response times, privacy safeguards, and latency. Tags may be in one of multiple states. Tags in a NORMAL state or a FLAGGED state may be enabled for deployment, and tags in a SUSPENSION A state or a SUSPENSION B state may be blocked from deployment. A tag's state may change based on monitoring the tag's latency to determine if latent events occur. Tag latency may be asynchronously monitored independent of web page requests or requests to execute an application. For example, if latent events occur, then the tag's state may change from NORMAL to FLAGGED, and if non-latent events occur, then the tag's state may change from FLAGGED to NORMAL.