Originally Posted by
lakhesis
2/2 upgraded 553 ilvl bindings increase your haste rating by 8%, but have no effect on your crit rating.
Therefore 100 crit would have a stat weight of 450 (100 times 4.5)
While 100 haste would turn into 108 haste, which has a stat weight of 453.6 (108 times 4.2)
Ergo when reforging any equal amount, you get marginally more value out of haste (with those weights).
So yes, it's your Bindings.
AMR is nothing but a calculator. Give it stat weights, it'll give you the optimal balance for them. It used to have to approximate, but nowadays it's virtually always guaranteed optimal (and tells you if it's not).
People who hate on it are actually just hating on the stat weights being used, or else have some weird hangup against calculators. TBH generally speaking they just don't understand what AMR really is & ascribe characteristics to it that it doesn't possess.
Edit: You'll notice that you're right on the borderline too btw. If your Bindings weren't at least 1/2 upgraded, you'd only be getting about 7% boosted haste rating & that'd mean it'd keep on reforging to crit rather than haste. The crossover point with your stat weights is a 1/2 upgraded 553 Binding trinket (there are hidden extra digits on the trinket's % boost). You can verify this by manually swapping in a non-upgraded trinket while leaving the rest of your gear as-is.