With out direct entry, its arduous to say what the problem may very well be. This is a listing of all the probabilities;
1. IP or bot assault (wp-login or xmlrpc)
2. Exploit and is being attacked
3. A current plugin replace has reminiscence points
4. Any crons
5. Database points
6. PHP situation
Generally one situation can create different points. Say the problem is the database, and it locks the cpu 100%…then PHP and every little thing else can have points.
Have you ever checked your total logs, and the logs for the particular web site? That offers you one a part of what you could remedy the problem.
Are these your web sites or your clients? If the problem is a plugin…there are strategy to disable a plugin by means of the database, as simply eradicating a clients plugin could create larger points that the present one.