That's because the GT 1030 has no hardware encoder for video, it was cut on purpose by nVidia to make people buy more expensive video cards.
Premiere and other programs use the encoder to accelerate and compress videos faster.
Any other video card from nVidia above that card (ex 1050, 1650, 1660, 2060 and so on) has a hardware encoder built in, which can be used by programs to speed things up.