Without the GroupV2Params caches, processing multiple large group
updates is extremely wasteful, decrypting the same profile keys and
UUIDs over and over again. The size of these caches has also been
*increased* to match the group size limit, or else there's no benefit
for large groups.
Other LRUCache instances are still off by default in the NSE by virtue
of the "NSE max" defaulting to 0.
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