[bottlepalm]

The app was analyzing all the pixels in a live image and overlaying data on it. Accessing the data from the camera was slower with .Net, I think more mem copies working with buffers and by arrays. This was long before any span<> memory<> functionality. Iterating the pixels was way slower, don't remember why but you have to remember vb6 has no garbage collector, and no VM/byte code. It was pretty fast surprisingly. So when we updated, our FPS took a major hit and we could never get the performance back to what it was.