Adjusting Latency Settings

Hi guys,
So I got the Cross Pack and U46MK2 last week. So far very happy.
However, after installing the latest U46MK2 driver (v3.0) and Cross DJ software 1.5 from the download section I noticed that I was getting some cracking in the sound. The instructions say to increase the latency if this happened, so I went to do this but noticed that this is now modified by the external Control Panel application, accessible from Preferences.
My PC is quite a few years old, but found I had no problems with Cross 1.4 and setting the buffer size to about 10 seconds. But now the most I can set is 6.5 seconds, and the slider is kind of greyed out, unavailable to set manually.
I'm using two 12" time code vinyl. The signal is 100%. As I say, I get a bit of cracking every now and again, but my main problem is that the pitch of the playing track at the time jumps up when I load in the next track for cueing.
Is there any way I can change the latency settings manually? What manages the way the settings can be changed - the new driver or the newer version of Cross?
I'm on a different laptop at the moment and will post a Configuration Report later.
So I got the Cross Pack and U46MK2 last week. So far very happy.
However, after installing the latest U46MK2 driver (v3.0) and Cross DJ software 1.5 from the download section I noticed that I was getting some cracking in the sound. The instructions say to increase the latency if this happened, so I went to do this but noticed that this is now modified by the external Control Panel application, accessible from Preferences.
My PC is quite a few years old, but found I had no problems with Cross 1.4 and setting the buffer size to about 10 seconds. But now the most I can set is 6.5 seconds, and the slider is kind of greyed out, unavailable to set manually.
I'm using two 12" time code vinyl. The signal is 100%. As I say, I get a bit of cracking every now and again, but my main problem is that the pitch of the playing track at the time jumps up when I load in the next track for cueing.
Is there any way I can change the latency settings manually? What manages the way the settings can be changed - the new driver or the newer version of Cross?
I'm on a different laptop at the moment and will post a Configuration Report later.