I have a 6 min queue but of the end of the time there is ~ 10 sec work left. In addition, mods such as RPG or QOL - research are not calculated.

I have a 6 min queue but of the end of the time there is ~ 10 sec work left.

I don't really understand what you mean there.
Given your name, german would also work if your english is not the best. :D

About QOL, I will look into that right now.
Edit: QOL research is taken into account, though that only updates if you add/remove something to the queue, the mod will then re-calculate the crafting time

What they meant was, if you have a large number of items being crafted, when the timer reaches zero there is still a few seconds worth of crafts remaining. As best I can tell this is due to a single tick delay between each item craft, so if you craft say 600 items in the queue, the timer will be fast by 600 ticks or finish 10 seconds sooner than the crafting queue does. This was occurring even when this was the only mod active. This was easily fixed on my end by adding "qItem.count / 60" to the craftTime sum so that every item adds one more tick to the timer.

What they meant was, if you have a large number of items being crafted, when the timer reaches zero there is still a few seconds worth of crafts remaining. As best I can tell this is due to a single tick delay between each item craft, so if you craft say 600 items in the queue, the timer will be fast by 600 ticks or finish 10 seconds sooner than the crafting queue does. This was occurring even when this was the only mod active. This was easily fixed on my end by adding "qItem.count / 60" to the craftTime sum so that every item adds one more tick to the timer.

Feel free to fork it "officially" and release a new version