Some sounds seem to disappear when I play. Simple example : a Fire spell. Sometimes when i cast it, i can clearly hear the casting sound, but sometimes it just isn't here, or is really really low. That seems to happen to every type of action : attacks, spells, or even environmental objects (lever, doors...).
I tried updating my sound driver, and even got a new laptop, but it didn't change anything.
At first i thought "meh, that's detail" but it's really getting annoying

.
Please help :O !