Export difference between Software Only and GPU Acceleration

My laptop is very tired when editing a movie with Software Only, so I use GPU Acceleration (CUDA) when editing. Then it works much better. There are differences, however: all options regarding subtitles; stroke, background and shadow are much less saturated. However, this is the smallest problem.

The biggest problem for me is that all graphics with the Transform effect applied to them are buggy. They move strangely diagonally and many others. Similarly, transitions in Premiere Composer by Mister Horse look a bit different. They have a small black bar on the left side.

The editing itself with the above-mentioned problems is not that bad. The worst thing is, however, that just before exporting my video I am forced to change it to Software Only so that the video looks good. The consequence of this is that my short 20-second movie in 1080x1920 in 30 FPS exports for 10 minutes.

Has anyone had a similar problem? Thanks in advance for your help.