Many slow when publishing new questions on my site

Question

There is a site that is very slow when posting new questions. I tried stopping all plugins from the template and the problem was not solved. I cleared the cache in Cloudflare and the problem was not solved. 

 I upgraded the vps server to the plan 

 180 GB NVMe 

 4 vCPUs 

 8 GB Memory 

 6 TB Bandwidth 

 Please help me In solving the problem

 My website link: 

https://elnokhbah.com/

Comments

Where can I find the event log? Please explain the steps

---

Please help me with this, clarify where I can find the event log

---

Please help me, do you mean delete?
qa-plugin/ event-logger

---

In Admin/plugins/event-logger options you can see the option to turn it off.