Premiere Pro does not use GPU even renderer is set to Cuda

Hello, I am Frans from Indonesia.

I have been using Pr 2020 for editing video 1920x1080p 30 fps for several days. Sadly, for 17 minutes of video, it took 7 hours 45 minutes of exporting. I know it is NOT normal, i know. I know you are also curious about my specs.

Here it is :

- Asus TUF gaming FX505DD

- Ryzen 5 3550H (constant full load to 100%)

- IGP Radeon Vega 8 (working up to 30% something, then constant to 10% something)

- dedicated GTX 1050 (extremely rare working up to only 40% for seconds)

- Ram 8+4 (constant load 11,8gb)

- nvme ssd for system + hdd for storage

FAQ :

1. Have i set the renderer to CUDA? I have.

2. Have i set the encoding to hardware encoding? I have.

3. Have i used any other apps to show if my GPU works? I have. Blender using BMW, render spent 7m59s. Games (Naruto storm 4 and eFootball PES), GPU works up to 90-100%.

not normal right?

I have tried using version of Pr from 2017, 2019, 2020, 2021. The results are variative, but still hours.

But there is something i realized recently. When i see rendering process using Media Encoder (Me) 2020, at track that is using text, the GPU works to 40% as i mentioned above. At track that is using keyframe to edit position and scale, the GPU is back to 0%.

My concern questions are :

1. Is there any possibility of software issue? or it is just my GPU?

2. Is it normal, when the track is using text, it needs more of GPU to work, and when the track is using keyframe to edit position and scale, it does not need GPU to work?