Yesterday I was still using Natty with Compiz. I had noticed that disabling Vsync in Compiz made dragging windows much more smooth and responsive (I don't mind the tearing).
I installed Ocelot this morning which seems to use Mutter by default (I may be wrong there, I'm still kind of lost). Dragging windows has the same sluggish feeling as with Compiz and Vsync enabled. So I was thinking I could try disabling Vsync.
Can vsync be disabled/enabled in Mutter?
Edit to answer the comments:
$ ps -ef | grep compiz | grep $USER <myname> 3989 3908 5 12:14 ? 00:03:38 compiz <myname> 4051 3989 0 12:15 ? 00:00:00 /bin/sh -c /usr/bin/compiz-decorator <myname> 15409 15406 0 13:25 pts/0 00:00:00 grep compiz
So indeed I was confused. If I'm running Compiz I should manage to bend it to my will.