1. Pls, ensure that lower performance server was used in setup wizard.
2. Pls, disable separate cache for mobiles if layout is responsive (by running setup wizard). It will reduce CPU using twice.
3. 'internal requests' can be enabled as well to free web server resources as well:
4. Simple thread of optimization can be enabled as well:
5. Server and cloud cache warming up can be disabled as well:
7. Further, CPU cooldown can be adjusted like this:
8. If it not enough, images compression and images adaptation can be disabled.
9. Cache update after meta fields changing can be turned off by adding this:
10. If the above steps are not enough, all automatic optimizations can be turned off:
Also, please, clear processing queue: https://www.s-sols.com/docs/wordpress/accelerator/status-and-operations-accel#queue.
Finally, if above steps don't help, hosting plan should be upgraded.