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October 19, 2013, 11:55:11 PM |
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Leaving difficulty at default won't hurt outside of the first minute or two of mining. Variable difficulty will rapidly take effect, but that means you'll have a few shares rejected early on as a result. Not a significant waste, and if you aren't tinkering with it much, virtually unnoticeable in the grand scheme of things since it only happens when you reconnect.
Setting it at 256 or 512 both work, 256 will be slightly less variance (<1% difference in 24 hours, and that can be + or -).
PPLNS will always pay better in the long run. PPLNS is a 3% fee that pays orphans, transaction fees, and namecoins, reducing the effective fee to ~1%. You'll have good luck and bad luck along the way, but over time you will always end up ahead on PPLNS.
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