Problem with Llorix One Companion plug in

Hello. I’sorry for my English.
I used your theme into three websites. In one of these I have the WP 4.7.3 version. I have installed the plugin Recommended: Llorix One Companion. In the testimonials section I simply removed the default link to the image (I did it directly into section customize theme). After this the site has slowed down I could not navigate in the section customize theme. I uninstalled the plugin and installed again. But the site still goes slowly. If I deactivate the plugin Llorix One Companion the site works well. It would be very nice if you help me because I want to continue to use your theme. Thank you