Scrapebox on 1GBiT dedicated server - Suggestions needed

Hey guys

I got my scrapebox last week, I was failed to use it on my home pc then I decided to transfer it to my dedicated server. Now success rate is better. But I need your suggestion to improve my experience with scrapebox.

Current settings and success rate:

Fast poster connection 100
Fast poster timeout 70sec
Harvestor connection 100
Harvestor timeout 30sec
Proxies: 500+ daily fresh.I am using public proxies, ( I am not interested in to use private one).

Success rate 15 to 30 percent.

Need your all kind of suggestions & material related to scrapebox.
Waiting for your replies

Well you really can't get higher than 30-35% Success Rate with Public Proxies.

If you don't want Private proxies atleast get a VPN it costs 4$ or so per month.