bluebonnet,
I've been in all those GRS offices the past few days and all I did to survive was
S
P
O
I
L
E
R
leave the room within the five seconds and then just go right back in which buys you another couple minutes of search time, each time. Also whenever I entered a new room for the first time I saved my game so if I didn't make it out to the hallway in the alloted 5 seconds I could reload into the same room.
BTW, love your moniker.