GT6 has its own Block Break Log without any Addons needed. Mystcraft can do more Worlds and one of the CoFH Mods can do Building Areas.
Auction Houses and Game Menus I dont know though.
And all of those Plugins come at the cost of breaking Mods, so you either have easy Plugins with broken Mods or you have better Addons with working Mods.
So if this Chunk Loading Issue happens even when there is no Plugins, then Thermos/KCauldron themselves are the Problem, because of fucking up the TileEntity ticks.