In the past both the app and the plugins did not have access to the GPU (Graphics Processing Unit)
The CPU handles all the tasks required for all software on your computer to run correctly. A GPU, on the other hand, supports the CPU to perform concurrent calculations. A GPU can complete simple and repetitive tasks much faster because it can break the task down into smaller components and finish them in parallel.
A graphics card (also called a video card, display card, graphics adapter, VGA card/VGA, video adapter, display adapter, or colloquially GPU) is a computer expansion card that generates a feed of graphics output to a display device such as a monitor.
With the introduction of a few new base structures and the updated software environment we are in, Paint.Net is now running with better and faster performance.
I understand exactly what you are saying.
Unless you are building your own plugins as a user you should see no difference other than faster and better performance.
@Rick Brewster You didn't let me finish.
Hope this helps @John Peter