Currently I am using After Effects CC 12.2.1 on a new Mac Pro with two AMD FirePro d700. My question is why in After Effects can not use the memory of this machine. Since the program only shows that I have 2Gb. Is there any solution for this?
In the photos you can see the current configuration of my computer
Are you confusing the ram available to the GPU with the system ram available in the system. You should be able to change the Vram number. To see how AE is using the memory and processor settings click that tab in the preferences.
Have you seen the documents on optimizing AE. Type optimize in the upper right hand corner of AE and go through the first two linked documents.