Been playing Civ6 on Mac Pro 7,1 for many months with very few problems. Decided to replace 15 YO monitor for a brand new one. Now Civ6 will not load correctly. Mouse is totally useless. No input possible from keyboard and the image quality is clunky. I'm using Sonoma 15.5. Is there a work around for this problem or do I have to give up playing Civ after over thirty years of gaming?