CPU overload

Hello,

I love your plugin and my theme (TrueMag) actually recommends using it.
But the last couple of versions severely overload CPU of my server. My server specs are:
– CPU: 4 × Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz
– CPU Cores: 6 × 2100 MHz
– RAM: 3 GB

CPU was constantly on 200+% on mysql service (I used ‘top’ command to check it) with an average load of 7. And that’s with only 30 or so visitors on site.

show full processlist if full of entries like this:
SELECT wposts.ID FROM wp_posts wposts, wp_postmeta wpostmeta WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_key = ‘_wp_attached_file’ AND wpostmeta.meta_value = ‘2019/05/xyz.jpg’ AND wposts.post_type = ‘attachment’

where 2019/05/xyz.jpg is the featured image of the post in the widget.

I tried with your Fast Tracker extension and other recommendations you made here:https://ww.wp.xz.cn/support/topic/ver-2-6-overload-server/
but it was the same. I had to disable it, and now everything is as fast as it should be.

It even (somehow) managed to mess up the interface of UpdraftPlus plugin:
https://imgur.com/bBkyfTl

After I disabled Top 10 plugin, that interface is also back to normal.

I would really appreciate some help here 🙂