Ah. I asked because there events didn't load in your header in the screenshot, which would lead me to believe you still have a very large events table (or you recently purged and have no events in the events table). The exception from the Meta point is unrelated to the performance issue beyond its being an event. How large is your events table currently?
You can try purging your audit table too, running
DELETE FROM audit; either in the H2 web console or in the SQL console page.
There can be a caching issue on the excel reports page sometimes where the first time you load the page it doesn't pull up the list of templates. If you refresh this almost always brings up the list.
If the hard drive is going crazy, is it with reads or writes? If you have tons of meta points running often doing .past(MINUTE, 5) type operations, that would be a heavy read load. There are solutions to convert that over to using the cache. If you have lots of point values waiting to be written (check this on your /internal/status.shtm page), you can adjust the NoSQL settings to delay more for small batches and increase the small batch size.