Sorry for the late reply, we spent all that time investigating your website.
1. We can’t see any issues to be related to the theme provided Widgets, and at this moment theme handles only 1 widget itself the Ashe Author widget, all the other widget theme uses are from different companies and provides added via 3rd party plugins.
2. Regarding your website speed, from the google insights we clearly see that In most cases issues are related to the images, you need to modify your uploaded images for better speed results, we also notice server response time, it’s related to the server/hosting provider.