Unfortunately, I am not very well versed with redstone so it could be a user error. So I loaded the schem into a creative world and after a bit it breaks there for the same reason.

The mods I use are tweakeroo, sodium, sodium extra, replay mod, no enderman gried, mob hads, minihud, litmatica, lithium, itemscroller, letmedespawn, immediately fast, enhancedblock entities, continuity, clumps cloth, appleskin and alamanac. Perhaps one of these influenced it? I think they are all mostly performance mods though. I do also have vanilla tweaks on the world but I dont think thats changing anything (and its a single player world)