Its fairly simple and was pretty much described in the OP. The issue is that most people can't do this solo. Step 1. Start a fresh play session and make sure you haven't looted anything for 1 hour. Step 2. Screenshot your starting gold. Saves your starting point goldwise and starting time. Step 3. Stop when you start seeing guaranteed loots missing such as wood and/or scraps from siege engineers. Step 4. Screenshot a vendor interface with all your loot in it and your current gold visible (you dont have to sell your loot for this, just put it in the window and cancel). Step 5. Gold now - starting gold + what vendor offer * 1.2 is what you made. If you made 25k+ within say 50 minutes, you have enough time to notice the missing loots during the last 10 minutes in 99% of cases. Assuming you're paying attention ofc. *1.2 to be safe. The real conversion would be *1.25 but for items worth 1 gold you actually get 100% due to rounding so to be on the safe side not to exaggerate you can use 1.2. And yes, everyone should be sceptical. Which is why'd I'd love if other people (who can) would share their testing as well. And there is still a chance this is some anti-cheat gone wrong or some other odd bug. But to me, since I can replicate this consistently in several zones and have done so dozens of times now, it certainly seems very likely to be the case that a loot cap was added without any mention.