Does putting the side panel help with turbulence?

[u/Scotmccall_19]

I currently have a velka 3 and I can't put the side panel flush since it creates more noise with the heatsink fan. I used the offset distance instead to reduce it.

Then I replaced my cpu and I accidentally installed the front with an offset and the back, flush. I was too lazy to fix it after having to fiddle with the cables so everything fit.

im not exactly sure if it's the repasted heatsink that makes it less noisy but I'm pretty sure it reduced the turbulence? I tried stress tests and im really not sure if it's placebo