There is also another reason why you may consider upping you wager at tc+1, when your actual advantage is close to break even or just slightly above break even and that is to smooth out your ramp and reduce larger jumps, especially if you ramp up aggressively.
Let's say that there is a game where I am max betting at $400 at tc+3. Working backwards and rounding, I would place $200 @ tc +2. At tc +1, mathematically, I should either be placing my minimum wager of $25, or possible a slightly bigger wager of $50. In this case I would go ahead and make a $100 wager @ tc+1 to smooth out the ramp and avoid jumping from $25 or $50 to $200 at tc +2.
Making that $100 wager @ tc +1 would keep the doubling process after wins in effect for raising, which looks more natural, and avoid a single jump of 1-8 ($25-$200) in one jump. And being that the advantage for the entire tc +1 'bin' is slightly positive, there really is no cost. I mean yes, technically you are overbetting the tc+1 advantage, but I am ok with that. It won't have that much effect on RoR. The "ruin" from risk of ruin, becomes more of a danger when you are overbetting your top wagers (max bet and second to max bet).