Slow copying from cache to output folder

[ForestQ]

I have 3 machines with 12 GPU workers, 6 CPU workers, and 12 health checkers. There's a 1 Gbit network between the sources, output folder, and cache folder.
When I upload files, - currently testing with 100 files totaling 20 gigabytes — the conversion takes about 3 minute. The cache folder fills up with files totaling around 2 gigabytes, and then slow copying to the output folder begins. Uploading 100 files takes around 7 minutes, even though the 1 Gbit speed is available.
I understand this is due to single-threaded copying from the cache to the output folder. I ran a test on a local machine using a single SSD without networks, and copying is still slow in a single thread through the health check. Is it possible to increase the number of concurrent threads from the cache to the output folder?
I want to say that the software is excellent! Thank you!

[HaveAGitGat]

If you use flows then each worker does the copy/move itself so multiple will happen in parallel depending on how many workers a running.

You can optimise this further by using the node tags feature (pro) so you can create a node that is just for moving the file at the end and have e.g. 5 workers for that.