Long export time

Recently exporting photos takes much more time.

4000 photos - 50 mb compressed raw 50 Mpx

All possible tabs have been adjusted such as calibration, effects, curves, etc. Quality of jpeg has been reduced to 75% and size as well long edge to 6000px.

Top left corner does not even tell the progress anymore, it is stuck on exporting "100%" files.

It takes about 4 seconds for a photo to be exported that is about 4,4 hours for 4k photos.

I have i5-9600k, 32 gb ram and a SSD drive.

Would it always take that long? Is that because the RAW files are compressed from around 105 MB to 55mb? I have been exporting photos before, but I do not think it ever took that long.