Compilation Dependent Behavior

Sounds like a timing optimisation problem. Certain builds work perfectly and so it is unlikely to be functional error. The most possible culprit is at the bidirectional data to memory. To optimise this is a bit of headache if you want to follow the official rules of TimeQuest and delay measurements.

I suggest trial and error. Make sure all the registers are fast io. keep the Tco of various builds under control(may vary wildly if registers not fast io).

A good test is having a PLL to rotate the data clk in order to find best window.