Revert Back to Older Version Perhaps Helix

This is my first visit. I have an older Linux system running Mint 17.1. The graphics card is older Radeon RV280 9200; the system runs excellent. I tried to install Kodi and it was version Jarvis however wouldn’t load the screen past the Jarvis display then back to desktop after 5 seconds. I tried to install an older version of Kodi and instead got Krypton. Krypton loads however is very sluggish due to the GPU. Replacing the GPU is not an option. I was hoping reverting back to an older version of Kodi I would be able to get it to run on the older GPU. I tried searching this and everything I tried hasn’t worked. Any thoughts on rolling back to say Helix or any other thoughts you can provide? I have a Pivos Xios XS box that ran first Helix and now is up to Jarvis and it works great. This desktop unit is for a TV room we have. Thanks for your time and advice.