I feel like it's not, cuz my LPM is hella low. 1. leader vps: E5-2670 2x2.6GHZ, 2GB RAM, SSD, 1GBPS, ~$6/month. Runs only GSA SER with it's captcha breaker (and dropbox). Runs only 1 campaign which submits to target sites from loopline's verified list and saves it's own verified list into Dropbox. GSA Threads set to 500, but it's usually ~100. LPM is ~15. 2. follower vps: E3-1240 6x3.5GHZ, 4GB RAM, HDD, 1GBPS, ~$13/month. Runs only GSA SER with it's captcha breaker (and dropbox). Runs 5 campaigns that submit to target sites from leader vps's verified list on dropbox. Threads set to 500, at the moment it is 500 (cpu still ~50%), but LPM is only ~60 (!??!??!? wtf). Options allow to post on the same site again. All 5 campaigns set to auto export verified list to Dropbox, where 3rd vps picks it up and runs through GSA indexer, but it's not relevant now. Both vps's are on serverhosh. Both use total 10 proxies from proxy-hub.com (semi-dedicated). Both set to use these proxies only for submission. Both use 1 same catch-all email(important? not sure) from catchallboxes.com. Both have unticked "Submit backlink URLs to blog search engines", cuz all links pass through indexer on 3rd vps, so it's a waste of resources. Why is the damn LPM so low? I suspected it could be proxies, but I asked the support guy and he said each IP supports 100 threads (so total 10x100), but not sure how legit is that. And they are not for scraping, so I don't really need more of them. I noticed some campaigns get this important message, but I don't know how often it occurs and if it's even causing the slowdown. It could be failing in like 1/10000 logins, who knows.