I had the exact same problem when i first installed my new sapphire tri-x oc 290.I was going crazy!I could not believe that my system was going as low as 12FPS.So i changed drivers,uninstaled the card from my motherboard,i started running 3dmark benchmarks to see if my card is broken.But when i saw more performance points than an i7 4770 with a Titan then i knew something else was going on.
It appears that the bigger your blueprint becomes the more the FPS drop!!
The performance drop you are seeing(if of course your card is not damaged) has to do with the fact that visualizing blueprints is more cpu and gpu intensive than Dead rising 3. 
What i did was select a branch of actions (for example my walking logic) and right clicked.Then you can select “collapse nodes”.For every Node i created i gained about 10fps!
I hope that this is your problem as well and you do not have a bogus card.If the above does not work and you card is working fine then you might have a CPU bottleneck in case your processor is weak ad cannot handle an r290.
Let me know how things went.