Tons of Bread. Clocked.
With Q possibly indicating that the last recent "stress test" had failed, it might be interesting to have a look at some simple bread statistics for possible reasons or clues to this "failure".
So here's a quick list of the Top 10 fastest breads so far (sorted by BreadNr, 600-post avg from timestamps of the 50th/650th post in each bread):
#IMG|#UID|Date/Time 1st Post|Speed|Bread Title (source)
103|440|2018-04-20 02:33:18|32.06|Q Research General #1386: QA With Q (1109400.html)
367|427|2018-10-05 01:21:37|42.25|Q Research General #4229: Thank You /CM/ For The Kitchen Upgrades! Edition (3337418.html)
449|364|2018-10-05 01:41:04|30.98|Q Research General #4230: Are You Ready To Be A Part Of History? Edition (3338148.html)
346|369|2018-10-06 19:57:32|35.29|Q Research General #4268 Welcome to the Bench Justice Kavanaugh Edition (3367903.html)
400|258|2018-12-01 03:06:20|31.22|Q Research General #5210: NO FURTHER DETAILS SHOULD BE RELEASED Edition (4092963.html)
258|304|2018-12-04 02:15:30|31.77|Q Research General #5270: Eyes On Edition (4139125.html)
257|307|2018-12-04 02:39:57|32.06|Q Research General #5271: Focus 41 Edition (4139837.html)
114|428|2018-12-12 23:50:07|51.87|Q Research General #5454: Q & A Edition (4280570.html)
98|443|2018-12-13 00:04:02|55.64|Q Research General #5455: Q & A Continued Edition (4281211.html)
160|464|2018-12-13 00:15:59|44.28|Q Research General #5456: Q & A Part 3 Edition (4281811.html)
and another one with the Top 10 of most UserIDs per bread (sorted by BreadNr):
#IMG|#UID|Date/Time 1st Post|Speed|Bread Title (source)
103|440|2018-04-20 02:33:18|32.06|Q Research General #1386: QA With Q (1109400.html)
160|463|2018-09-20 00:02:10|27.65|Q Research General #3915: Q&A Edition (3093640.html)
136|463|2018-09-20 00:23:55|23.39|Q Research General #3916: Q&A 2 Edition (3094196.html)
183|417|2018-09-20 00:41:55|17.97|Q Research General #3917: Q&A 3 Edition (3094701.html)
252|375|2018-09-20 01:43:30|20.58|Q Research General #3918: Q&A 4 Edition (3096146.html)
235|377|2018-10-03 18:18:00|30.98|Q Research General #4199: Emergency Broadcast System Edition (3314219.html)
367|427|2018-10-05 01:21:37|42.25|Q Research General #4229: Thank You /CM/ For The Kitchen Upgrades! Edition (3337418.html)
114|428|2018-12-12 23:50:07|51.87|Q Research General #5454: Q & A Edition (4280570.html)
98|443|2018-12-13 00:04:02|55.64|Q Research General #5455: Q & A Continued Edition (4281211.html)
160|464|2018-12-13 00:15:59|44.28|Q Research General #5456: Q & A Part 3 Edition (4281811.html)
8 out of 10 breads with most UIDs are Q&As. Those also tend to be among the fastest breads (4/10).
The last Q&A (12/12) was fastest (55.6 & 51.9 posts/min) and also the one with highest number of UIDs (464).
However, the Q&A from 04/20, Bread #1386 had a similar number of UIDs (440). Thus, upgrades/updates (e.g. servers) haven't done much to the max. number of UIDs posting.
But it shows that upgrades have improved posting speed: Bread speed appears to have increased from previous values of max. 42 posts/min to 55 posts/min with similar numbers of users posting (430-440).
From a technical perspective, if one were aiming for e.g. 700 users being able to post at 70 posts/min then the last stress test could be seen as a failure. As a Baker, I'd worry about having to bake bread every 10 mins or faster at 70 posts/min.