Does it still happen in Troubleshoot Mode?

Site doesn't load at all in troubleshoot mode. Also the Allstate Insurance website complains. Says I should use a more secure browser.

Does it still happen if you disable hardware acceleration?

Yes, still happens. Stutters with hardware acceleration disabled. Running Linuxmint Xfce, Nvidia 1060 6gb, I9 Intel processor.

Can you share URL to the game?

https://www.vegasworld.com

Go to about:support to the Graphics section and confirm that Composing = Webrender and GPU 1 = NVidia.

Compositing WebRender (Software)

GPU #1 Active Yes Description NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2 Vendor ID 0x10de Device ID 0x1c03 Driver Vendor nvidia/unknown Driver Version 535.154.5.0 RAM 0

Why is RAM 0  ???

Hmmm, it's Software, so everything goes through CPU and it will hang eventually.

So, in the settings under performance, I unchecked "Use recommended performance settings" And I checked "Use hardware acceleration when available"

Now it shows: Compositing WebRender

Doesn't show (Software) now

Over 300 auto spins and no hang for me on Ubuntu, CPU and memory remain stable. The game is rendered with hardware WebGL regardless of Webrender being Software.

In Chrome, visit chrome://gpu/ and check the GL_RENDERER version.

Does it still happen with the flatpak version?

Chrome

GL_RENDERER: ANGLE (NVIDIA Corporation, NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2, OpenGL 4.5.0 NVIDIA 535.154.05)

Test it now.

I don't have the flatpack version installed. They both show ver 122.0.1 Running the one in synaptic

It just hung at 468 spins

You can also try downloading the Mozilla version, extract it somewhere and run it.

1000 auto spins for me with no hang.

Go to about:support in the address bar and check the value of "Window Protocol".

Try running in native Wayland by setting the environment variable MOZ_ENABLE_WAYLAND=1.

I have no idea where to set this MOZ_ENABLE_WAYLAND=1

I downloaded Vivaldi browser and it's doing fine. 4700 spins so far,.... smoothly. So I think I have found my new browser. I'm not going to fight this anymore.

Thanks for the effort.

It's smooth for me with basic integrated graphics.

You can set environment variables from the command line:

MOZ_ENABLE_WAYLAND=1 firefox

Or you can add it to the ".profile" file in your home folder (restart session to take effect):

export MOZ_ENABLE_WAYLAND=1