Achievement question

Fastfinger- Disarm the C4 with under one second remaining,only one 1% of the AAPG community has this. .
i played on c4 map's all night defusing waiting for timer to hit 4,5,-Seconds before starting diffuse process
Timing and getting exact time its takes to defuse the bomb.
Then cutting the wire with exactly 0.00 seconds remaining.....
What am i doing wrong or is this a broken achievement?
i played on c4 map's all night defusing waiting for timer to hit 4,5,-Seconds before starting diffuse process
Timing and getting exact time its takes to defuse the bomb.
Then cutting the wire with exactly 0.00 seconds remaining.....
What am i doing wrong or is this a broken achievement?

Comments
okay i timed it all pulled it right at 0.00 again cut nothing
This has been a test of the emergency flame-fest system. Please do not adjust your set.
I agree.
And if you were responding to the previous post, he was talking about the achievement for killing 100 Devs and how he doesn't see Devs playing, not killing the game.
This has been a test of the emergency flame-fest system. Please do not adjust your set.
1 - when the bomb is counting down to explode, on PS4 is there somewhere where the actual time is displayed...? Right now the only way I know it's about to go is by listening to the beeps lol.
2 - on PS4, do any devs play? If so how does one go about jumping in a game with them? I'd be happy killing a Dev just one time