I currently have a refurbished mid 2014 15" MBPR with the dedicated gpu, i7 2.5 GHz, 16 GB memory, and 512 GB SSD that I bought in January of this year. Right now I'm using my 15" MBPr to do the basic things such as work, web browsing, listening to music with Apple Music, and using Fusion 8.0 to run Windows 10 Pro. Also I don't play computer games. I'm thinking of purchasing the 13" i5 2.9/512 GB SSD/ 16 GB memory. Do you think that its wise for me to downgrade to a 13" MBPr? and will I notice a decrease in performance in Fusion 8.0 running Windows 10 Pro?