At least in old computers, OpenGL is much better rendering that browser´s default, so for getting OpenGL on, go to chrome://flags/ and enable software rendering list
With other useful settings
Override software rendering list -> Enabled
Smooth Scrolling -> Disabled
Toggle a performance metrics overlay while Cast Streaming -> Disabled
GPU rasterization -> Disabled
Accelerated 2D canvas -> Disabled
Relaunch browser and see difference.