Smush Envira Gallery Conflict

Some Envira Galleries are taking very long to load. e.g.
http://+++merny.wpengine.com/galleries/events/
http://+++merny.wpengine.com/galleries/training/

After checking with WP Engine, they are saying that "the external call to smushpro.wpmudev.org is taking 40,300 ms on it's own on /galleries/fire. That may be preventing items from loading until it finishes and causing the timeout."

This is what WP Engine sent me:
https://static.livechatinc.com/8801096/P8I2O8ATC9/4efc070dae938ebffa47aa86f18b338f/Screen%20Shot%202018-05-01%20at%2012.57.51%20PM.png
https://static.livechatinc.com/8801096/P8I2O8ATC9/3a833b70add6fc40bd18d3ed5cf92842/Screen%20Shot%202018-05-01%20at%2012.59.13%20PM.png
https://static.livechatinc.com/8801096/P8I2O8ATC9/ebac19981646ead89e83c74bea05cb9e/Screen%20Shot%202018-05-01%20at%201.02.25%20PM.png

Can you please investigate why Smush is sending request to Smushing server every time the gallery is being loaded? Gallery load time drops instantly when I disable Smush.