“I want to hear from Wes. Come on man!”
Is Eric or anyone else on this forum not good enough? IMO it doesn’t matter who answers your question, as long as they offer the correct solution. There are a lot of people here that can, and are willing to help.
Just so you know, you’re asking a question about a plugin that wasn’t created by Wes, Appfinite, or anyone here. It’s always recommended to contact the original Plugin Developer if you need support for a 3rd Party plugin – https://appfinite.com/topic/forum-rules/ This theme doesn’t affect the functionality of how the plugin works.
To fix your issue, I’d recommend using the Regenerate Thumbnails plugin to have your images adjust to the size you have set in your settings on the Slider Settings page. Give that a try and see if it works. I’ve personally never had an issue with this plugin and this theme together, so it should work unless you have something else interfering with the functionality.
I’m interested in the result, so let me know once you try that solution.