Dear, I keep going the same. I changed the .bat file like this:
sgminer -o stratum+tcp://scrypt.usa.nicehash.com:3333 -u YOUR_BITCOIN_ADDRESS -p d=8192 --nocheck-golden-count --chips --ltc-clk 128 -S 328 //./COM3
Hmm, hard to say what is the issue. Are you overclocking the unit? When you mine on straight LTC pool (for example on
https://solo.nicehash.com/) are you still seeing these HW errors? It might be, that these GAW miners can't handle low-difficulty fast-switching coins very well...