I am facing a kind of dilemma with my PCB design. I am designing a two-layer PCB with the ground plane (GP) on the 2nd layer. I have many tracks that run from one side to the other of the board, hence, to avoid the GP being cut in half, I added many vias. I heard that too many vias are bad.
What is more important: having few vias or keeping the GP intact?
Here is my concerned section, the GP will be on the green side (the yellow line on top and bottom are the edges of the PCB) :
To keep the GP more intact, I'm thinking about adding other vias on the top, just after the crossing section with red tracks.
The concerned tracks are data. I read that vias can cause trouble in case of high-frequencies, acting as an antenna. At which frequency is it a problem?