Just wondering GTX 1080 is normal to run at 4.8sol/s 
No, as stated in the readme you should get about 8.2s/s on GTX 1080 https://github.com/Optiminer/OptiminerZero#features
Maybe you are confusing iteration/s with sol/s?
It is showing that number on my screen 4.8s/s
using this:
Quote
ECHO "Change the user and password in start.bat to yours!"
REM For suprnova.cc use following:
SET POOL=zero.suprnova.cc:6568
SET USER=moobar.worker
SET PASSWORD=x
SET GPU_FORCE_64BIT_PTR=1
optiminer -s zero.suprnova.cc:6568 -u makemefly.budi -p gpu -m 8080
pause
REM For suprnova.cc use following:
SET POOL=zero.suprnova.cc:6568
SET USER=moobar.worker
SET PASSWORD=x
SET GPU_FORCE_64BIT_PTR=1
optiminer -s zero.suprnova.cc:6568 -u makemefly.budi -p gpu -m 8080
pause
SCREENSHOT (how to attach image???)