@Seller_UdCB3aWxjRwo9 Hey there! Thanks for jumping into this thread — you're definitely not alone in seeing this, and I can totally understand the frustration when the numbers just don't seem to add up.
Amazon's system uses delivery promise padding as a proactive tool to protect your metrics, to account for unanticipated or uncontrolled circumstances, even when you're already performing well (see this help page for more detail).
Even though your OTDR is sitting at 94% and you're delivering 1.4 days ahead of the promised date, the system is looking at broader patterns the network to determine where padding might reduce the risk of late deliveries. Think of it less as a reflection of your current performance and more as a system-wide safeguard.
My suggestion would be to keep doing what you're doing, your actual delivery performance is strong, and that data will work in your favor over time. If the padding persists and you feel it's negatively impacting your business, it's worth reaching out to Seller Support to flag it.
Hope this helps!
NR_Amazon