Suppressors Q: Will suppressor create dust cloud when shooting from prone position?

Not at all. While recoil reduction is not as profound as with a high quality brake, it is significant. And depending on the brake you're currently using, the recoil might be softer with a suppressor. But, it all depends on the suppressor/caliber combination.
 
If anything your brake is going to be kicking up more dust and debris than with a suppressor. Although, that is more of an issue for the guys on your left and right. You will have no issues with a suppressor.
 
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