I think the reason why it is not as apparent in other SH sims, is because SH5 allows for more sophisticated and realistic behavior of the escorts, as with IRAI.
For example, I was playing SH4 last night, testing some issues with RFB, got caught by an escort which nailed me with DCs. I did an evasive maneuver at flank, went deep and slowed to a crawl. He lost me, failed to regain contact and moved on periodically dropping DCs far from me.
From that, you would be tempted to conclude that the DCs scrambled the water, but it is probably due more to the limitations the game places on the escorts sensors and behavior.
TDW - if you can fix this, it would be fantastic.