limit usage with bsleep bfactor does not work?
i have a gtx 760 with 2gb.

i am using: --cuda-bsleep=100 --cuda-bfactor=12 --cuda-launch=12x18

my goal is that the miner uses only about 40/50 % of the gpu due to a heat problem.
with the configuration i posted above it uses 100%

if i increase --cuda-bsleep=100 to 101 or 200 it uses only about 4% and does not mine at all.

am i doing something wrong or is that a bug? 
could someone tell me how to make the miner use not all resources?