I have issues with my Mac Pro 5.1 from 2012. I have installed Big Sur 11.1 via open core and it runs surprisingly well. But when I use apps like Dreamweaver and Photoshop the computer has problems. In Photoshop I have to deal with beach ball all the time, even when I close it or open a file/picture. When Dreamweaver is opened it is impossible to work with a page for some minutes. It seems like Dreamweaver is a very heavy app. iStatmenus shows that some process in the computer requires 250-300 percent of probably the CPU which is going down to normal in a couple of minutes. Same thing happens when I open another Dreamweaver-file, it can’t be used at once. The videocard-memory is vanishing if I use these Adobe-apps. It get ful after 10 minutes. The card is an AMD Radeon RX570 8 GB. I had Nvidia-card before with 4 GB but when it also had this problem I thought that 8 GB should be the fix, but no. This computer is originally an Quadcore. Maybe 12 core can’t be used with ful speed and power? Or is the 3.06 GHz-processor bad? Slow?