It is odd, but this issue only occurs when my laptop is plugged to my external monitor with dual screen activated.
If I view the diagram on my laptop with no external monitor, the jittering does not occur.
I have a high-spec laptop but with a low-range graphics card. This is weird though because I can run games or run high-demanding programs like photoshop with dual screen activated. I can’t imagine a diagram with a bunch of nodes is that demanding :p
And again, without the grid turned on,it works fine. Maybe you want to check if something is wrong with the rendering.
I will mark this as resolved for now because I don’t need dual screen in production.