Watch your warm up volume. Your doing a set of 5 at 90% of your work set on Deadlift. I'd recommend ramping down your warm up volume more like:
225 x 4
255 x 3
305 x 2
The idea with warm-ups is to feel out your form and prime the CNS for recruitment. Don't waste good energy on a bunch of sub-optimal volume. Save it for the work sets.