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).
3. If it not enough, images compression and images adaptation can be disabled.
4. Please, ensure that self-learning is enabled:
5. Further, CPU cooldown can be adjusted like this:
6. 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.