Ooper London 2 has the same horrible lag and broken grapple, with ~ 25 ping F6. And you can't change hitsounds like in any other version of newnet, says admin has disabled hitsound changes.
Thanks for the extra feedback. If you get a chance can you try the Combo DM New York server? That one is running an older version of the same newnet and I would like to narrow down when the lag/grapple issue might have arisen, if it wasn't always present.
I had problems with the hitsounds long ago and probably set it to force them IIRC. I think the problem I had long ago with them has been fixed now (at least I remember things regarding hitsounds in the chagelog) so when I figure out whether I should revert to an old version, update to a new version, or abandon altogether I will change this hitsounds setting for you. You prefer the bong sound instead of the stinger?