You can reload while sprinting, sure, but you can’t cancel the animations with sprint anymore, which is a huge drawback. The ability to cancel reload is, imo, far better than the ability to reload while sprinting. That makes Double time potentially the only “negative” augment in the game.
It was definitely a good augment until SD “fixed” it. Before, you could cancel reload with sprint and the mag would still replenish.
There are a lot of useless augments like Cool and Pineapple juggler, but only Double time is bad enough to make me wish it wasn’t present at all on the card, like on Aura BL41.
For some loadouts like Fletcher A31, you can find the equivalent loadout without double time. For that loadout especially, I consider the iron card to be better than the bronze equivalent.
You can still cancel the animations with other tricks (switching weapons very fast), but it is not convenient and a bit retarded if you ask me… Why would an augment force you to do something so complicated ? I don’t think that’s how the devs imagined it at all.
tl;dr: please make double time as it was before.