While you can't set them in the livebox you can set them on the PC itself therefore overriding it.
Technically there should be no real difference in speeds. DNS would only usually effect how fast your system can request the lookup of an address. Once it's found there shouldn't be much need for DNS to be involved until you need to access another server/source etc.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum