First, exec() is disabled from host and they are not going to enable it. Why don'y you consider different method or compliment current implementation with some other backup image optimization technique like other plugins do? exec() is disabled by majority of host and doesn't seem to be a good choice.
Second, optimization is very low for desktop. For mobile, Lightning shows incredible results, 80-90+ when it was 60-70. For desktop, though, speed is still in range of 50-60s.
I like your plugin for single-click installation and using and liberal price policy, but some things are off or at least do not work in my case and I would like to solve them and eventually buy your product.
Edited by stivens, 14 February 2018 - 09:17 AM.