Respec offers many more opportunities to test things like this much faster...so I took the liberty and did my own tests and came up with essentially the same numbers as Venom.
I was curious, however, to find out what Hasten does to the whole end picture. No one mentions anything except that it takes away 20 when it runs out, but the description seems to make it look like hasten also slows your base end recovery while it's on. I'm sure there's something about this in one of the hasten threads, but I'm not about to scour 202 pages of posts looking for this information. The only hard part was finding a combination of toggles that would reduce me to zero end before the 2 minutes were up for hasten so that I wouldn't get an erroneous number. Flight and super speed seemed to hit a sweet spot (no stamina at all) at full-to-zero in 1:51.54 and 1:50.8 (two trials). With hasten on, 1:50.88, 1:50.79...no effect. So I'm glad to report the ONLY thing hasten does to endurance is take away 20 when it's finished. Since it lasts for 120 sec, that's an effective rate of -0.17 on the average.
BTW, thanks for all the good testing, people! I myself have 5 toggles running (TD, CD, SS, CJ, Hasten) and the slots where the end reducers go can be very critical in a battle. Just for those who were wondering, with 6-slot stamina and 4 slots of end reducers to disperse, the remaining recharge rate (after toggles were taken out) hit a max with 2 in SS and 1 in both TD and CD. Remaining end recharge = 1.85...still higher than normal...but not quite the 2.15 I had before respec. <sigh> ...the price you pay for complete invisibility and convenient accuracy. Oh, well.
