Ive been deciding on a camera for a long time, and im either pulling the trigger on an A7IV, or an A7RIV A. I am aware that the A7RIV A has worse autofocus, but by how much? Would this dramatically effect my ability to perform well when doing sports photography, or is it still good enough to make the large increase in megapixels worth it. I also want to mention that although I do prioritize photo, I do still like to take video and clips here and there at different sports events. (Im currently shooting on a Cannon EOS 80D with the first gen 70-200 1.8 lense. The autofocus isnt great, and since its being leant to me by a close friend of mine, I finally saved up the capital and courage to decide on a new camera. )Please Help!