Walking/flying issues

Since this latest update, I have been unable to go down stairs, ramps, or even hilly inclines without 'falling' with each step. Also, flying is really slow and it doesn't happen in the usual position, but more upright, like I am just walking in the air.

Any ideas on what I can do to fix this? It is preventing me from participating in a number of rp sims that I enjoy because I cannot move around normally.

Thanks

Just as a note: what you see and what other people see are different. It is entirely possible (and quite probable) that your client is hiccuping and not rendering the animations correctly.