Huge lag when smoke / semi-transparent / alpha effect

[eddiefur]

Thanks for the reply!

I wanted to share a screenshot but It seems we are unable to upload photo to the forum.

Anyway, I will tell you a place it's always happening.

Lego star wars II, the US version. If you go into the first level of episode VI, in the cutscene, when the spaceship door opens, you'll see darth vader and a bunch of smoke (aka semi-transparent textures). Before the door opens, I'm at 60fps 100%. But when the smoke are all over the screen, I'm at 23 fps 36.9%. When the smoke disappear, I'm back at full speed 60 fps.

This happens all the time in every games where semi-transparent textures takes a lot of place on the screen. If it's just a little semi-transparent object or effect, it'll be ok, but when they are all over the place, it's a nightmare .

I checked the option "disable slowers effect" but there is no difference, the same lag happens.