Some people find this to be the case. I am pretty steady on BF so dont know personally, but I know a dude who used to be pretty high BF and did a test cycle and had to use a shit load of adex to keep from swelling up like a balloon. He is more reasonable on the BF now, say 10 - 12%, and does not even use an AI on a medium dose of test.
You'd have to experiement and find out for you.