How to fix timing issues using the timing assignment options?

Hi, if you have put your timing constraints in correctly defining the setup and hold requirements for the inputs, I would think it unlikely there is a timing violation. Does Quartus report any timing violations?

Perhaps your tracking delays are different to how you think, particularly with respect to skew. I have found Quartus to be great at meeting setup constraints, but poor with respect to hold constraints, but at least it would always report if there is going to be a problem!