Is there any way to read the system’s available memory from a web player application,
Some PCs that run the application may have low memory due to running many other applications in parralel, causing the game to crush or behave differently
You can get the amount of memory that the system has easily enough:
However that won’t tell you if the user is running lots of apps - just whether they have enough base memory.
Maybe you could put some sort of frame rate checker in to your game, and just pop up a message saying “Performance is poor, consider closing some background applications” to solve your problem?