[Delirium Map Bug] Slow Motion and Massive Acceleration Issue

While running a sub-tier 10 map with Delirium, I experienced severe performance issues. The game normally runs smoothly (consistent 50-60 FPS), and my hideout was fine, but this map instance had persistent problems.

Issues observed:

Extreme slow motion during combat, with shader usage spiking.
After mobs die, the game speeds up for 2-3 seconds like having a speed shrine, then repeats.
The issue made the map unplayable and eventually caused my first-ever game crash.
Experienced a 2-second delay when dropping items on the floor


Steps tried:

Relogging.
Restarting the game.
Returning to the hideout and re-entering the map.
None of these fixed it. The issue seems map-instance specific, possibly server-side, as other maps are fine.

Additional info: No other programs were running, and the issue was only in this map.

The video below provides the graphs aswell

https://streamable.com/vwgqze