Spooling on = huge intial delay, Spooling off = invalid XML errors. Isn't there a better option for buffering the incoming http response?

Are there any other options built into SVN kit for dealing with large incoming HTTP responses? Users of our product sometimes have very large SVN repositories, so we had to enable spooling. The problem is that we would like to start processing svn events as soon as possible, and not wait for the incoming response to finish.

Is there a better way to buffer the incoming response without bouncing the whole thing off the disk?