Every time i make an edit of my MP4 footage, it takes nearly 10 minutes to be able to watch the video and hear the sound correctly. I am new to editing and am assuming it is re-rendering after the editing but i don't understand why it takes so long, my CPU and Ram usage is minimal. It also seems to lose responsiveness during this time.
I'm running a i7 7700k, 32gb 3200 ram, and a GTX 1060 3GB. Any suggestions how i can improve this?
The footage is recorded in 1080p 60fps