So let's say that in some game like BESIEGE, Space Engineers or minecraft, I would build something really big. Then, of course, it jerks. But why is it in the case, Proz. Or RAM.
Depending on what it is, I would also be happy about an example of each other's construction part, so what that could then have problems.
Since it's up to you to upgrade your PC (my guess to remove the jerks) I recommend you write down your current PC configuration here so the community can look over it and then issue recommendations.
To answer your actual question:
https://de.wikipedia.org/...tsspeicher
https://de.wikipedia.org/.../Prozessor
In RAM, the data needed by the processor for the current calculation are buffered. If you do not have enough RAM, data will be moved to the hard drive, which of course is a lot slower, and you will notice that the PC needs eternities to respond to input.
The CPU does the main computation so what's doing KIs, and how the game should respond to your inputs, etc. When it's fully loaded, any further computation has to wait for the CPU to finish up with the previous one.
When playing PC synonymous important is the graphics card. It calculates your image output and supports the processor by also calculating 3Dimensional space or physics.
Why Minecraft is jerking with you now
¯ \ _ (ツ) _ / ¯
May be on all 3 components. You can find out by running the Task Manager next to the game and see how much the individual components are busy. When a component is running at 100%, that's a sign that it then slows down the work of others.
The minecraft was just one example. But just so I understand that correctly: If I blow up a huge pile of TNT, for example, does that charge for the graphics card?
In Minecraft, the CPU, with physics I meant the physx games like the fluttering plan in Mordors Edge or the whirling dirt when you shoot a shooter on the ground.
The RAM stores data between. Only when the RAM is full, then there are problems. The data can't be saved and therefore always have to be recalculated.
The processor calculates everything that has to do with AI or data. Since the limit is reached much earlier.