It is whatever your search settings and search results are.
40 schedules but how many accounts in each schedule and are they running at the same time?
Not sure what you mean by down to 26 per two hours instead of 26 per 30 minutes. What tweeting schedules, times and settings do you have and what delay do you use in setttings?
1 account runs 1 scheduled task running the same time - I have got 6 CPUs and 6 GB RAM and it is only 50% of the resources used.
But it should not tweet mention the same search result on and on and on - that is a twitter ban!!!
my delay is as you recommended 1000 to 2000. it is scheduled 26 tweets every 30 to 35 minutes. GTOTHEM we had that discussion already. And it cannot manage that schedule.