So my lights in my map is flashing all over the place, and in some angles and from a certain distance you can't see them. And also some of the lights goes staight through my brushmodels.
How can I fix this?
The lights is in a fx if that helps.

right click 2D view, select LIGHT instead of the fx thing you try to do, trust me ...its pretty straight forward.
To stop lights you can use caulk_shadow or shadowcaster texture on the back of the textured surface facing the light.

Thanks for the answer, but i'm using ugx easy fx, so when im walking into a room the light starts with a trigger_multiple. And so the lights needs to start at the same time as the fx's. Can you do this with a standard light aswell?

Can you do this with a standard light aswell?

Yes, that can be done but it's prob not a good idea to do this with all lights in your map as there's a limit for using dynamic lights and they also get glitchy when their radius overlaps / multiple of them light the same surface..

http://ugx-mods.com/forum/index.php/topic,5375.msg59578.html#msg59578

Okey I see 
But do you think it could be possibly to mix them a bit, so I use only a few fx lights and standard lights?
Or would they still be wierd and glitchy?

as long as you keep them under the limit ( wich is 64 i believe ), and dont place them too close to each other you should be fine

Okey thanks