Multithreaded preview render?

I have lots of folders with documents, and watching the previews being rendered one-by-one, only using one core on my system with many threads, and with an SSD, seems a bit antiquated.

Is there some setting I can set to let dolphin use 4 or 8 threads to render previews in folders faster?

Is there some setting I can set to let dolphin use 4 or 8 threads to render previews in folders faster?

Not a the moment, but that would be feasible.
There has been some work towards achieving this that didn’t pan out unfortunately.

Feel free to open a feature request, it may already exist.

Reported 481643 – Thumbnailing should be multi threaded on SSDs and other fast devices