Blender should have a high memory mode
When you turn on high memory mode it caches more to ram like object history or renewed algorithms that write more to ram for quicker processing, or simply retaining stuff while doing stuff like texturing or node stuff
I haven’t seen the source code to blender yet so not sure if these are valid points, but I do have 128gb of ram in my pc, would love to see an option where blender can use like.. 72gb on a 22m render?
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Not sure whether a "high memory mode" makes sense, but having more tools to quickly bake certain things like nodes (shader, geo, whatever) and be able to store them in RAM/VRAM where and when it makes sense would definitely help.
Works are already being done in these regards AFAIK (with simulation nodes).
I think this would be an interesting reading:
Geometry Nodes Caching Prototype - Archive / Geometry Nodes - Developer Forum