Importing *.NZB from watch-queue to download queue becomes very slow

[iUseNetter]

Importing *.NZB from watch-queue to the download queue becomes very slow the bigger the amount of files are.

Currently, I have 4'500 items in the download queue.
If I add 10 files to the watch queue, every of this 10 NZB needs about 5 seconds to get added to the download queue.

I tried to stop the download process completely (pressed "pause" and nothing is downloaded at the moment at all).

How can I speed up the import from NZB into the download queue?
Which settings need the most time? (Sort? Check?)


SABnzbd on Synology: Version: 3.6.1 [fa844a6] / Version 3.6.1-57

[safihre]

You are reaching the limits of SABnzbd, because it's written in Python it can only do 1 thing at a time (some exceptions apply), so when the queue is this large just displaying the interface already slows everything down.
Indeed all you can do is pause the queue and not have the interface open in any place.

[iUseNetter]

Thank you for the explanation, @safihre!