I have 4GB cards also.
Try Team Red Miner.
No problem with 374, works like it’s 360
I was very pleased to see that 
Phoenix sometimes gets through, sometimes gives me same hashrates as yours at 374.
TRM keeps working like it’s nothing.
But I saw someone saying it can crash after some time.
I didn’t use it more than 2-3 hours, and during that time everything was OK.
Some mandatory commands in command line but was working just fine.
I’m back at Phoenix but it’s good to have an alternative.
Or just switch to Linux.