system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] What are the limits to Flash's ability to vibrate through objects?

Just to begin with I understand how flash vibrates through things, I don't need that explain. 

I'm more interested in the limits that are placed on the ability, he is capable of vibrating through ordinary material as well as lantern constructs but how would he fair against different objects such as a magic forcefield or a piece of material where the molecules are constantly changing the frequency that they are vibrating at.
gpt
"What are the limits to Flash-"
Pretty much none. He can subconsciously put limits on himself though (or just not try as hard). Speed force allows him to do crazy shit. Idk about what he could do against the magic one, but he could steal enough speed from the vibrating molecules that they stop moving, then phase through em.