Thanks for such a prompt reply!!
The locations of the node are under the corosponding drops. I tried moving the router to the study which is shortest coax run along with BR1 but it does not seem to make a huge difference in speed, if anything the dvr's speed came down to 200, the other devices ranged from 130-180. all the drops are terminated at the wall plates using a 75ohm 25db rl terminator, i need to leave them connected to the splitters because we move the stb around. I wish i could run some cat and rg11, but it would be cost prohibitve on an house this old and large.
What i really don't understand is why device 3, which is phyically right next to the dvr is having such a big speed hit.