JVM spikes over 85% and baseline doesn't drop back down

We have watchers setup to notify when our JVM increases over 85% we have noticed that once the watcher is triggered the alerts keep firing and the jvm usage never drops back down. Is this normal behavior?


We have 5 nodes - 40G RAM each JVM 20G
420 indices 956 shards

We have made several changes to try and help the alerts from triggering but nothing seems to be changing.

What is the output from the _cluster/stats?pretty&human API?