If the service/drip loop is done correctly, not to small where it binds the cable, then there will not be any difference in signal...do you really think a 6 inch drip loop is going to interfere more than the prewire cable pulled as tight around a corner in the attic as possible where it almost breaks? Or the staples in the studs that crimp down so tight on the cable that it almost cuts it half? Lot more issues than a simple drip loop.
Never argue with idiots, they'll drag you down to their level and beat you with experience
This is CABL.com posting #329709. Tiny Link: cabl.co/mbxV3