While the Tilt2 is equipped with an accelerometer, TouchFLO itself is not designed to re-orient itself in landscape using just the accelerometer.
That being said, some applications do go into landscape mode when you turn it with the keyboard closed. The Windows Mobile SMS application, some versions of Opera, and other various apps. Otherwise, to "force" landscape the keyboard needs to be open (or use some 3rd-party app/tweak).
Also, out-of-the-box, the stock ROM is actually pretty responsive and fast. Its one of AT&T/HTC's better built stock ROMs out there. Of course there is always room for improvement. I suspect the slow/unresponsiveness is due to the fact that its a demo unit thats already been messed with.
As for the additional text field in the browser, I have no idea what that is. Only thing that pops up normally during normal browser usage is auto-complete that makes URL suggestions.
Nokia Lumia 920, Nokia Lumia 900, Droid DNA
Microsoft Surface Pro 128GB
Retired: Helio Ocean, HTC Touch Pro, HTC HD2, HTC EVO 4G, HTC HD7, HTC Touch Pro2, HTC HD7S, HTC One X, HP Veer 4G, HTC TITAN, HTC Thunderbolt, HTC One, Nokia Lumia 800
Windows Phone Expert / Development