Help with buffer in fusion. flashing nodes and green

Hi there. Just quick question. I'm Nuke operator so this question will be silly for people like you.

My script has some nodes flashing all the time and is buffering the entire sequence every second. How can I stop the buffer in the timelime. It gets green all the time and I can't work comfortable.

Also I want to say that Fusion is amazing and I like more than Nuke.