Not really. I decreased power target to 80% and core/mem by -100 MHz initially but didn't have enough time to complete testing. Once my HDPLEX 160W arrived, I've been testing it today on BF1 for a whole two hours (stock clocks, 1080P, Full AA) and it seems to work perfect!
I didn't get a Dell PSU though, just a "generic" $70 one from HK.