Slow patch changes after software update

[tomcc]

I have posted this on the Access Virus forum and here to see if anyone can offer any help
I have just updated to to the lastest software after previously running 4.05.01 ( Stand alone) This would allow me to scroll thru the soundbanks reasonably quickly with no delay between the sound patch changes.
After updating to 4.5.300 when I change patches it will sometimes go thru quickly then stop on one patch for whats seems ages then will continue and then stop on a patch then go again. It seems to wait on some patches ( the same ones) as if it has to play catch up to process the change. Yet with the 4.05.01 upadte it will scroll thru smoothly on exactly the same patches. WTF?
Does anyone else have the same issue?
This was the reason I rolled back the update, but have just installed some Adam Nickey patches and I thought I would try out the new software. But I think I will roll back.
Is Access aware this is a problem or does everyone suck it up.
Can't be my TI2 desktop as it is fine with the old software and changes smoothly and works fine with the new software but a pain in the ass when changing patches.
Tom