I'm on wifi, there's rarely noticeable latency, even on full screen updates. Ctrl-a and friends still don't work properly. However, iSSH has an option that let

I'm on wifi, there's rarely noticeable latency, even on full screen updates. Ctrl-a and friends still don't work properly. However, iSSH has an option that lets you use the option key instead, and for me that did work just fine, but escape didn't. Now in version 5.x escape and ctrl work for everything except the most common emacs key bindings, and option-A doesn't any more.