godotengine
Area2D causes huge frame spikes and stutter, attributed to "setup/solve constraints"
Tested versions
Reproduced in 4.3 stable, 4.2.2. stable (haven't tested other versions)
System information
macOS, Windows
Issue description
We noticed our game having serious intermittent stutters in Godot 4.3. They were seemingly random, and checking the profiler I saw large spikes usually in Physics2D category "setup constraints" and occasionally in "solve constraints". I reproduced the issue in a small project consisting of just one Area2D moving around a bunch of other Area2Ds:
https://github.com/user-attachments/assets/02d3a9b7-70d3-4aa5-a5bb-b0a18828192b
and here's one of the biggest spikes I've seen (this time in Godot 4.2.2)
Steps to reproduce
run MRP, start profiler and check "Physics2D" to see the graph. Within a few minutes you should see some large frame spikes that coincide with the FPS dropping.
