Difference between LC and IR

[Crayox13]

Hi guys,
any ideas what can cause the preview of LC to look ok as it should and then when IR starts to render it looks as if it has inverse gamma, everything is very bright and washed out?
When the render starts it's also washed out. Now when I tried BF/LC the render is normal - light as the LC preview showed it.

[Crayox13]

Found it...I didn't use sky portals for these scene, and since I used either vray sun/sky system or dome with hdri I guess it just didn't have enough samples for a scene like that. But LC always knew what it should look like hehe IR didn't.