Any limits on tags?

We are looking to use Sentry’s tag feature to help identify error reports, eg tagging every event based on the resource associated with the error.

tagname: resourceid

Most of the usages I have seen for tags involve a few dozen possible values, but this use case would involve potentially tens of thousands of unique values. This is motivated by the desire to make our events work better with search.

Without knowing the details of internal implementation, I notice that sentry, eg, autosuggests based on unique tag values: can any power users chime in on likely performance limits?