Quality Drop When Viewing Video

[AmaruVT]

Hello! I got Adobe Premiere the other day and have gained a little bit of knowledge on how to navigate the program, however, I've obviously ran into a problem.

The Problem: So, I'm editing a video for YouTube and when I play the video, the quality completely drops but when I pause the video the quality returns. Attatched is a comparison of what I'm referring to. I'm scared to keep editing because if I finish editing an almost 2 hour long video and if I were to export it and the quality drops, I wouldn't know how to recover the higher quality video.

In case it's needed to know the quality of the original Twitch VOD was broadcasted at 720p60. 

[Richard M Knight]

Make sure your program monitor is set to full and not to 1/2 or1/4 in the setting box next to the wrench.

[AmaruVT]

It worked! Thank you so much!!