I've decided to give Kodi a try on my PC to see it normally runs slow, or if it doesn't run the best on Raspberry Pi 3. The results are that it doesn't actually work that much better on my PC, and though my internet is fast enough to run Netflix, Hulu, Youtube, and other services, it struggles with Kodi. But, oddly enough, it as XBMP/XBMC, the program originally designed for the original XBox that would later become known as Kodi, runs the best for me on XBox and I don't have such an issue with streaming.
I also found that Kodi works much better when controlled through an android device on the Raspberry Pi rather than a USB controller or keyboard.