Haripriya Naidu deals with metadata contention:
This feature is specifically designed to reduce metadata contention. Note that adding data files will not resolve metadata contention, as that addresses a different type of contention.
You can learn more about enabling this feature and its benefits here.
A company I used to work for was a perfect candidate for this, except that the limitations meant that we couldn’t actually use it. We ended up switching some of our most frequently recurring temp tables and table-valued parameters to memory-optimized user-defined table types and got us out of our metadata contention mess without using this feature.