[🐛 Bug]: Dynamic Grid load not evenly distributed and test timeout before scaling to desired level of concurrency

[Alex-Rod]

What happened?

The grid is not distributing the load evenly when executing across nodes on different VMs. The scaling of the sessions is slow and does not increase to the assigned thread count (in this case thread-count was set to 300)

Command used to start Selenium Grid with Docker

Hub:
$ docker run -d -p 4442-4444:4442-4444 --name selenium-hub selenium/hub:4.2.1-20220531

Nodes 1-4:
$ docker run -d -p 5555:5555 \
    -e SE_EVENT_BUS_HOST=<ip-from-machine> \
    -e SE_EVENT_BUS_PUBLISH_PORT=4442 \
    -e SE_EVENT_BUS_SUBSCRIBE_PORT=4443 \
    -v ${PWD}/config.toml:/opt/bin/config.toml \
    -v ${PWD}/assets:/opt/selenium/assets \
     --name docker-node selenium/node-docker:4.2.1-20220531

config.toml
[docker]
# Configs have a mapping between the Docker image to use and the capabilities that need to be matched to
# start a container with the given image.
configs = [
    "selenium/standalone-firefox:4.2.1-20220531", "{\"browserName\": \"firefox\"}",
    "selenium/standalone-chrome:4.2.1-20220531", "{\"browserName\": \"chrome\"}",
    "selenium/standalone-edge:4.2.1-20220531", "{\"browserName\": \"MicrosoftEdge\"}"
    ]

# URL for connecting to the docker daemon
url = "http://172.17.0.1:2375"
# Docker image used for video recording
#video-image = "selenium/video:ffmpeg-4.3.1-20220531"

# Uncomment the following section if you are running the node on a separate VM
# Fill out the placeholders with appropriate values
[server]
host = <ip-from-node-machine>
port = <port-from-node-machine>

Relevant log output

https://pastebin.com/LifJ99kJ

Operating System

Ubuntu 20.04.3

Docker Selenium version (tag)

4.2.1-20220531