I filled a bug report last week about the threading problem. Unless I pause/stop and resume/restart my project every 5 mn, threads drop from 250 to around 20 in a matter of a few minutes.
I have never experienced that before with all my projects, everything was fine.
I can not explain what is the problem, can anyone does?
Ps: I have lists of 100 000 Urls and try to check and send (captcha and proxies are ok)