TOPIC: Problem: JotCache encreases server response time

Problem: JotCache encreases server response time 17 Nov 2015 13:24 #1528

I'm using JotCache with latest Joomla and JCH Optimize Pro. I test my pages with developers.google.com/speed/pagespeed/insights/ - tool from Google. When the JotCache plugin is off I get result around 0.5s - the response time. I want to decrease it using JotCache. However, when I activate JotCache I get opposite result - my response time becomes around 1.5s. So I don't understand why it happens and this case I suppose the best solution is to turn off the JotCache? Because it has only negative impact?

Joomla version : 3.4
JotCache version :
site template: Yootheme Sixth Avenue
system plugins :
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