Hi,
I looked at your report but didn’t find anything obviously responsible for what you are concerned with. I did, however, find something questionable about your crawler settings. I’m kind of surprised that you didn’t report any issue with your crawler. It is this setting: crawler-crawl_interval = 1800 .
“Crawl interval” indicates how long the server should initiate the crawler to crawl the entire site again after the crawl process has started, which is why the default value is 302400 seconds (3.5 days). You set it to 30 minutes, which means the server keeps restarting the crawler process once every 30 minutes, way before the crawler is able to complete crawling your entire site. What is recommended is that you leave the default value and watch how long it takes your crawler to complete crawling your entire site a few times and come up with an average value and then set the Crawl interval value to be just a little bigger than how long it takes the crawler to complete crawling the entire site once. For example, if it takes three hours to complete the process, then you can set it to four hours. Some people mistake “Run duration” to mean how long it takes the crawler to complete the entire process. The way the crawler works is like this: 1) the process is initiated; 2) the crawler runs by the value of the “Run duration”; 3) the crawler stops at the end of the run duration and breaks for the value of “Interval between runs”; 4) Steps 2) and 3) get repeated as many times as necessary until the whole process completes; 5) the crawler process is started again when the Crawl interval is up.
In summary, the sluggishness of your wp-admin could be related to the abnormal settings of the crawler in that it overwhelms the server’s resources and in turn makes your wp-admin slow. Just a thought. Please trying adjusting the crawler setting and see if your wp-admin will improve.
Regards.