So far working well on a shared Litespeed server at Veerotech hosting. Server resources have dropped considerably from my older VPS. There was an issue with some desktop/mobile settings with another plugin, but Michael at Litespeed responded very quickly with a fix to resolve the mobile cookies/caching issue on this discussion thread.
As a XenForo developper and big board owner, I worked with the LiteSpeed team to make this addon available to the XenForo customers.
I have been using it for a month on my board realitygaming.fr, and LSCache for XenForo 2 his a must have addon when you own a XenForo forum with LiteSpeed : it's reducing server load and can even reduce the impact of L7 DDOS attacks.