Nicely done. I occasionally use Vero for a circuit trial, modifications or testing mods.
Using a breadboard is a common tool for testing circuits and also has noise involved for obvious reasons but realizing that is to be expected eliminates most concern.
Noise beyond that like you describe can be due to how the board is laid out with components in proximity to other components that should not be. Our circuit boards are always carefully designed to avoid this and in some cases we will create a separate ground plane to completely isolate the components from each other above an beyond what you will see boutique or even commercial companies do.