I got 9 in 40 minutes grinding a mixture of elite and non elite 60-64s then none for the last 20 minutes.
Having same issue, stuck at 9. I thought i had missed a drop somewhere. not sure if its a time thing, or if no more than 10 drop total, and missed ones are just lost for good.
But… IF theres a 3 minute CD between killing mobs to get the drop, the potion is only lasting 30 min, and we need 10 drops.
This means that even if you kill a mob literally as you are popping the potion, and it drops the gypsum, it will take at least 27 minutes assuming you kill mobs exactly on the exact 3 min mark and they drop gypsum. LEAVING A TOTAL OF A 3 MINUTE WINDOW OF LEEWAY (and thats being generous considering im ignoring time it takes to kill mobs, and im assuming you are sitting on top of a mob on every 3 minute mark).
I’ll ignore that WM increase for now lol not worth the time and frustration atm.
I was grinding boars (lvl 58) and the wooden dudes (also lvl 58) for 60 minutes, it took around 40ish minutes to get 9 topaz gypsums then 20 solid minutes of no gypsum. Multiple bags dropped but none of them contained gypsum. This system needs to be fixed, and fast. It’s not worth doing if it’s not going to work.
I agree…more frustrating than fun. 
First Day I was doing the topaz gypsum with my gf, we both Got to 8/10 around 20-25 min in, after this she got 2 more and I never got any, for more than 30min straight, which let me to believe it had to do with her Gettin 10/10, thus stoppin drops however leaving the party(with 5min left) and reloggin didnt get me any of the missing 2 gems - the next Day however, i got the remaining 2+ additional 10 (wasnt grouped then) so dunno whats up with this 
Oh, so it will let you collect not only the 2 you were missing but then the 10 for that day? That’s good to know. I hope I read that right.
Ohhh I just checked my bank it seems I have been unintentionally lying xD sryy!
I have 8 in the bank from yday, so I only got a total on 10 y day (the 2 I needed to complete the first day + 8 more).
So max is 10, I just missed those 2 the first day and I’m still wondering if it’s cause we were grped when my gf completed her 10/10, or cause its sick bad rng or its a general bug with the potion stoppin’ to work ater x minutes sometimes!
Either way, something not quite right!
Thank you for that quick reply. But it still gives me some degree of hope. Hopefully AGS will realize their error, sooner rather than later. Then again it is AGS.
For me it didn’t stop after 30 minutes but it stopped after getting 8/10 gypsum. However, I received them throughout the whole hour, even one in the last 5 minutes. This leads me to the belief that I missed 2 drops somehow. I would guess that the drops stop after you earned all 10 of them no matter whether they have been picked up. If this is the case, this should change so you always get the drops until you picked up 10 and then just deleting the rest/preventing pick up.
Wish it had dropped for me in the last mins! xD
Reloaded + left gpr and tried farming along along the last 5-7 min or so, killing some 30+ mobs but didnt get any of the missing 2 ;/ Could be horrible rng, hard to say, but it’s felt quite consistent in terms of drops today and yday.
I think they will correct it soonish, but let’s see ^^
Well, if it behaves like you described
it is fine for me tbh. Gonna double check on that once I do the next topaz run.
Sweet!
Ye I mean, I guess its meant to be 10/10 farmable a day, if it’s a daily gypsum so hope it ends up being so
However, I can turn in daily as it is now, gettin 8 leftovers a day so its kinda all the same, just not synched with 10/10 a day xD
I also got only 9 pieces and i had to use another potion that i got with the 20% chance from Arcana.
It’s worked for me every day np so far. Seems like some people have bad luck, sorry this happened to you, I imagine its pretty annoying to have to burn a pot for 1 gypsum and then not be able to grind anymore
Edit: Every time I use it, I head to the forts in shattered mountain where the respawn is ridiculous, and finish up with about 15 minutes on timer every time.
Just finished up my hour long run and I only got 9 out of my 10 Topaz Gypsum to drop. Three of us were running through SM killing enemies non-stop.
There were two 11 minutes gaps between drops. the first three drops occurred after 1 minute, 12 minutes, and 23 minutes.
After getting #9 to drop, we cleared out the entire Vehemence fort 1.5 times within 6 minutes and did not get my last drop.
From what I can tell there is supposed to be a random 1-3 minute cooldown between Topaz drops, but whoever coded this probably fat-fingered it to be 1-13 minutes. Should be an easy fix, but it’s an annoying bug.
Same here… Stuck at 9. Got the first 9 in around 30/35 min then 30 min of farm for nothing. What’s worse is that will be stuck at 9 forever now… as I don’t think we could drop 11 to compensate in the future.
I had the opposite. I dropped all of my ten in the last 20 mins of the potion. Keep in mind that if you run with big groups and your group splits off, there could easily be drops you miss - and then you won’t drop anything anymore for the rest of the duration. It’s 10 max per day.
The timer on these attunement pots is stupid and needs to go away or get extended, these were suppose to be for solo peeps so not being able to get 10 when in a party much less solo kind of defeats the purpose of these really.
Its completely random whether or not the gypsum drops. I havent failed yet to get 10/10 hunting in Iratus solo due to the insane spawn. I usually finish with like 15-20 mins left on the potion.
The drop rate of the gypsum when under the potion needs to be increased, for sure.
I am healer my damage is not as high as some dps so it’s not possible to kill fast enough in 1 hour to get 10, these attunement pots needs adjusting… I am willing to put in the time to get 10 topaz gypsum solo but the pot timer wont let me and it’s not cause of lack ofspawn when I am killing in reek.
Some of us just kill slower and gather a small mob to kill at once is risky with all the healer LS nerfs.