UAD-1 + V1.18 = CPU hog

[Mobo]

Strangest thing happens with the latest v1.18 on same project I was working on with 1.16. While playing, one of the tracks using any UAD-1 plug-in starts eating up at least 50% of the cpu (according to the perf meter). It's random, it can be any of the track using UAD-1 plugs. Sometimes the master, sometimes a track, sometimes a folder containing at least a track using a UAD-1 plug. While it's playing, if I disable the UAD-1 plug in in the FX chain, it goes back to normal.

More on that :

I have these 3 tracks in a folder, each using ReaGate + 1176LN uad + Sony DX track EQ . The folder has a Sony DX Track EQ. The folder started to use 30% of cpu. I stopped playing. I soloed the folder and started playback again. => 30-40%. While playing, I solo the 1st track in the folder => eats 30-40% of cpu. I open the 2nd one, it eats up 30% as well. Open the 3rd, guess what, eats up 30% too. So I have 3 tracks opened using 90-100% of my amd64 3800+.
And it ended up in a blue screen with DRIVER_CORRUPTED_MMPOOL error message... :P

Any clue of what's happenening ?
AMD64 3800+
RAM 2Gigs
XP SP2
RME Fireface 800
UAD-1 V4.4

[Mobo]

Same project, same 3 tracks in a folder. Just looping a part of the project. After the first loop, perf meter goes back to normal.

Edit : This not always true :P

[Mobo]

Second Blue screen (DRIVER_CORRUPTED_MMPOOL) in 30 minutes... Going back to 1.16

Edit: Hmmm, same thing now happen with 1.16. Another hint : I start playing a mix, solo a track, un-solo it, and here we go, one the UADed track goes berserk...

Holy cow, I'm starting to think this UAD card is more trouble than anything else... A pity because the plugins are really good...

What I don't understand is that nothing has changed on the machine between yesterday and today, but yesterday everything seemed fine...

[pipelineaudio]

checking here...PITA UAD