Running -ca -ca instantly gave me BSOD - can be reproduced.
If I run two seperate ones it runs without problem.
-ca one is 2x instances, -ca -ca will be 3x, but worked for me on 8GB system and 5x 1070 win10
so run just -ca
Looks like 2 instances ... -ca -ca
[19:12:22][0x00000dbc][info] =====> 967.56 I/s, 1795.73 Sols/s
[19:12:22][0x00000dbc][debug] miner#0: 100 I/s, 185.74 Sols/s
[19:12:22][0x00000dbc][debug] miner#1: 95.6833 I/s, 177.337 Sols/s
[19:12:22][0x00000dbc][debug] miner#2: 94.57 I/s, 175.887 Sols/s
[19:12:22][0x00000dbc][debug] miner#3: 94.82 I/s, 176.51 Sols/s
[19:12:22][0x00000dbc][debug] miner#4: 98.7 I/s, 183.26 Sols/s
[19:12:22][0x00000dbc][debug] miner#5: 100 I/s, 185.617 Sols/s
[19:12:22][0x00000dbc][debug] miner#6: 95.6967 I/s, 177.403 Sols/s
[19:12:22][0x00000dbc][debug] miner#7: 94.5533 I/s, 175.953 Sols/s
[19:12:22][0x00000dbc][debug] miner#8: 94.8333 I/s, 176.223 Sols/s
[19:12:22][0x00000dbc][debug] miner#9: 98.7033 I/s, 181.803 Sols/s