How are you determining your thread concurrency? From my experience, higher concurrency is not better for these cards. Try removing the concurrency line from your .conf file, deleting your bat file and seeing what it defaults to. That will give you a good starting point for where you should be.

Your clock speeds need some tweaking. Your core clock is a bit high and your mem clock is a bit low. Try something like 1040 core clock and 1500 mem clock and see where that gets you. These cards can be massively overclocked with few hardware errors but they do get hot so make sure your ventilation is good.

Try it with:

core clock - 1040
mem clock - 1500
intensity - 13
gpu threads - 2
thread concurrency - 8192
everything else the same as you have currently and report back.