Timing Constraint problem on set_input_delay

Here's a text and document I sent to someone else asking about this. It's not as thorough as I'd normally like(which is why I haven't posted it on the wiki or anything like that), but hopefully gets you going. For flash, I've seen people interface to it really slow, in which case the simple method is easiest. They just don't want some enormous outlier. For trying to get it to run as fast as possible, the more complex method is best. Hopefully it helps.