Naval ops: Commander slowdowns

[EmptyNull]

There are some noticeable slowdowns still in this game.

They are very obvious during briefings.
The first line of text that scrolls up doesn't cause any slowness.
But by the third you're usually down by 5 fps and when the screens full of text the game slows down till 30 fps.

I first thought that it had something to do with the sound but changing the sound setting from high to low and using a different sound plugin only changed the sound quality.

Then I thought that it had to be the graphic plugin. So I changed those settings and used different plugins as well. Didn't change a thing.

After that I tried changing the internal pcsx2 settings. (speedhacks/cpu/etc)
That did not change anything either during any text sequences.

I've tried the current beta, the previous beta and a recent precompiled version.

Am I overseeing something?
Oh yeah text in the other games from the series doesn't cause a slowdown. (Warship gunner 1 and 2)