Please, fix this!

When I have a almost finished any project and I have to correct any text in my subtitle my project loses all my render preview. It's terrible! Please, create a solution for render captions individually.

Today, for example, I had a seventeen minutes project with linked comps, graphics and a adjustment layer with film convert... Then, I saw a one-letter-mistake and after change that, bum! My render work down... It's terrible! Is a nightmare....