Swarm simulation instability

I am trying to do swarm simulation using PX4 and gazebo but I get this error [sensors] accel #0 fail: timeout and the simulation doesn’t work properly my GPU is set to the Nvidia but I the CPU overheats despite not even reaching over 30% usage .

I am using ROS2 jazzy and gazebo harmonic for the simulation

What is your system RAM?
Try again by setting speed factor flag. This will give simulation more time to connect to xrce agent and get sensor data to publish.
Check this.