Yeah that was why I posted.
I couldn't figure out why even when I bounced (exported) it slow and audible. (Usually fast is fine)
I think a clue is that this song crackles and pops until the ASIO buffers are up to 9.

Is it your bass track that is delaying or all bass frequencies? I'm assuming the first. Is it a synth bass or a recorded one? Are there any other plugs on the track? Does it go through a buss or straight to the mains?

It was the bass which was a DVI fender bass.
Yes it goes to a bass buss
This synth could be the problem as it couldn't find it on boot up.
That plug no longer loads but that's another unsolved story.
It plays if frozen but not if unfrozen.
This must be the problem.
I tried switching to a new synth SI bass but it doesn't play all the notes.

M_Glenn_M
 
It was the bass which was a DVI fender bass.
Yes it goes to a bass buss
This synth could be the problem as it couldn't find it on boot up.
That plug no longer loads but that's another unsolved story.
It plays if frozen but not if unfrozen.
This must be the problem.
I tried switching to a new synth SI bass but it doesn't play all the notes.

 
Dropped notes are most likely due to your MIDI Prepare Using buffer being set to the new default of 250ms. Try increasing to the old default of 500 in Preferences.
 
And it looks to me like the Sonivox DVI Fender Bass is only available as a 32-bit plugin, so Bitbridge's bug may well be responsible for the delay. You can correct for that by dragging the frozen track back by the equivalent of one buffer or just making sure you render with your ASIO buffer set very low ( a couple milliseconds shouldn't really be noticeable).
 

So, altho I can't play it with the low ASIO buffer (at 9 now), it will render ok at low settings?
(My setup is 32 bit)
Interesting about the dropped notes and midi buffers,
I'll try that as I'll never get the DVI going again anyway and i have a few songs using it.

M_Glenn_M
(My setup is 32 bit)

 
Oops. Totally missed that; kind of assume everybody's x64 now. In that case, the whole Bitbridge thing is irrelevant, and buffer size should not affect render timing.

Lol no problem, I'm an old proponent of "If it works don't fix it."

It certainly sounds as though it's the plugin that's causing it, so I'd seriously consider replacing it with a different synth.
 
There are some GREAT patches in Dimension Pro, Rapture, and the one in Studio Instruments isn't too shabby.
 
Just a thought.