I haven't played any further, but it seems to only be these two specific torches in that room. There's another one like it at the entrance (marked with the X on the map) but it doesn't flicker.
Update: There's a lot more torches that have this problem on that level.

Hello, I've got flickering torches in BBI, but only there. I've not had any flickering anywhere else yet. It also only flickers, if I have the lantern equipped, without it there is no light at all from the torch until I get very close to it, then the light pops in. Switching off SSAO, Detailed Shado...