Seriously, guys, this buzzing thing can be a thing overrated.
I mean, we all read about how badddd it is...
But frankly, if the buzz doesnt' come out from the amp.
And if you are playing with good amounts of gain...
Then what's the issue? You got no audible fretbuzz from amp, and ur sustain is basically alrighty because you got some gain for compression.
If u wanna check for fretbuzz, play clean, sit down infront of amp and listen to the amp... of course, note that you gotta play the way you usually play.