I have an older Roku 2 purchased in 2015 connected to a standard def TV using composite cables. It still works but it is on the slow side processing requests, even though I have a super fast internet connection. I would like to be able to watch Hulu or Youtube TV, which I have problems with now. If I purchased the Roku Express + (2018), would I see an improvement in performance and be able to watch additional channels? While, it's only $30, I wondered if it's worth the effort. Thanks.