I have a pc setup with 4 GPUs. I have been mining Litecoins with Reaper for a few days getting over 1.3mhash without an issue. All cards running 100%. Things were great.

Suddenlty, now when running Reaper my GPU usage is fluctuating between 70 and 80%. The GPU is never even 100% in usage. Sometimes, the other gpus will randomly shut off as well.

Now, if I switch to CGMiner on the same pool and everything, it runs over 1.3mhash as it should. No GPU issues. But, it never gets a share. Its very rare that it gets a share.

Could it be because CGMiner is working with higher difficulty shares? And are higher difficulty shares worth more?
For example:
Is a share at difficulty 128 worth more than a share at 64? Are they considered worth double in the pools, and thats why CGMiner isnt sending shares as often? The shares are worth more and I shouldn't worry?

Or should I keep digging (It has already been over a week) as to whats going on with Reaper, and try to get that going again? That was submitting a share every few seconds. CGMiner now Its probaby 30-90 seconds per share.


Any help will be appreciated.

Thanks!