Opening Strongboxes inside Twist of Fate Mirage causes server lag (?)

Bug Report ID: #2,492,003,914 <Initial bug report, sent from hideout

Bug Report ID: #3,591,750,321 <Second bug report, sent from the Mirage instance version of the Acid Caverns map, which itself resulted from a Twist of Fate effect being applied to a Vaal Temple map.


Opening any strongbox causes massive lags. Pressing F1 and looking at the stats confirms stable ~30FPS and no CPU/GPU lags. It also confirms rapidly rising latency from a stable ~40 ms all the way to 300+ms. The increased latency remains and roughly stabilizes at ~200ms while the monsters remain alive. Killing the strongbox monsters re-stabilizes the latency. There have been no issues with my ISP, my own internet connection remained stable all the time.

This was happening while logged in on the Stockholm server.

The lags could just be related to my individual instance, but there has been light correlation between me opening strongboxes and agonal complaining in the global chat. Upon asking the global chat to wait for a moment, opening a strongbox, and then asking "did the servers start lagging even more 5 seconds ago" global chat replied affirmatively, although I do not know if that can be taken at face value.


Other possible sources of problems:
- The mirage mod was the one that causes golden volatiles to spawn
- The map had the "many totems" mod
- The map had the "...inhabited by seawitches and their spawn" mod