Hello,
XStore is compatible with the different cache plugins (WPKraken, W3 total cache, WP Super cache, WP Fastest cache, SG optimizer and many other). There should not be a compatibility issues. But if you use cache plugin we don’t recommend you to enable Lazy loading option for the images in the cache plugin settings because our theme comes bundled with the images lazy loading. Or disable lazy loading in theme options if you want to use the cache plugin lazy loading option.
Regards