I'm playing Steampunk [LPS], and I've started a new world. I reached the nether and made a hearth in my house, but It's not working. It takes water and lava in, the meters get full and the chimney gives smoke particles, but it's not giving me the "insulation" effect (or however it's called) and it's not changing the temperature. I thought maybe it needs to be in more enclosed space so I took it to a hole underground, sealed it up and fueled it, but it's still not working. There are also no particles in the air, even when the button to show the particles is turned on.
I removed ad astra, computer craft and scguns (I think it was called, I don't remember exactly, but a gun mod) because I don't use them and my computer's already struggling with the modpack, but I don't think they should've impacted cold sweat.
What can I do?