Ok I'll preface with I'm a novice with these things but I found that if you go to your libraries tab and then scroll down to transcode options uncheck "Tdarr_Plugin_MC93_Migz1FFMPEG_CPU
Migz-Transcode Using CPU & FFMPEG"
then check "Tdarr_Plugin_MC93_Migz1FFMPEG
Migz-Transcode Using Nvidia GPU & FFMPEG"
boom it started to use my Nvidia T600