Flash Pro CS6 is laggy working on large files

I was reading an article from 2012, which was when CS6 was released, and people were talking about maybe getting 4GB RAM, and bragging about having a computer that had 6GB. At 8GB you're already well ahead of what Adobe had as a minimum, which was 2GB. But, having 16GB could help Windows in general, so you could still do that, especially if it's not expensive.

The processor could be improved to speed up playback of complex vector scenes. If you were doing Stage3D work having a better GPU would help that too.

For just large files, the biggest improvement would be to get an SSD or a hybrid drive, that will make a huge difference to how long it takes Flash to open, and how long to open large files.

Here's an article on hybrid drives, which are certainly more affordable than SSD:

Hybrid Hard Drives Explained: Why You Might Want One Instead of an SSD