A single furnace was ticking at 6656

Here is a timings report.
https://timings.aikar.co/?id=8508745ac9ac43468fe96fb1cb68a1d2

Another laggoggles profile -

Here is a sampler report to open in VisualVM
furnace.zip

Here is a warmroast report-
Warmroast.zip

You totally fixed it!

I cloned the server, logged in, verified it was still acting badly, then upgraded to this new version, and this is the result.

I am not sure if I can do much about this, as this furnace has a lot of recipes and needs to check for them.

What if you check less frequently? That one furnace is ticking at 7066 right now, and it's not being used.

Can you do something like - is there work? no...idle 15 seconds.

well you decide through the RAM speed, and if there are items inside it will check if a recipe is working. I have tested some stuff but I dont know if they had a large impact.

I made a few improves, please test if they had a large impact for your setup: 26.3.155

Could you check if the industrial furnace has also this problem ?

well a better term would be hidden, I let them wait a second if no recipes were found, and I improved the recipe searching, (I used some bad vanilla methods)

Please push so we can enjoy it :)