When outputting with Media Encoder, the quality of the enlarged clip is low.

I placed Character Animator Scene in Premiere using Dynamic Link. And I placed two kinds of simple clips. It is an image written as Hello World. The clip of 640 x 480 pixels has expanded to 200%.

The video output directly from Premiere looks like the following image.

However, the video output via Media Encoder looks like the following image.

Clip quality expanded to 200% is low.

Is there a way to solve this problem?