I uploaded v2.1 to my MEGA folder, see original post for the link.
What's new:
1. Added "-hc" option to improve stability for some cards/systems.
2. Added "-ss 2" option to reduce CPU usage even more.
3. Changed GUI: now with "s" key you can select minimal/detailed statistics.
4. Added estimated and average CPD (chains per day) values.
Tested on my rigs,270 should set hc to 300 or 320,TRT is better than 256, driver crashed over 350.
Something interesting happened during the process of testing.
v1.freep.cn/3tb_140415010210e1hj512293.jpg