Check usable RAM in task manager, but I will put my bet on Android emulator, the virtualbox always memory leak after running for hours.

Yes, Android emulator run on VirtualBox, it is a virtual machine that running your Android system la.
If you only running like 1-3 hours of Android emulator, but your RAM keep 90%, the only thing you can do is.

1. Just keep reopen your Android emulator, ensure VirtualBox also shut down in the process.
2. Turn off Fast Startup to prevent the memory leak bring over to next boot of your system.(hibernate is not reboot/fake shut down)
https://www.asus.com/support/FAQ/1045548/

Or, you just add more RAM to counter it la.
Memory leak by virtual machine is old issues that hardly can fix, so, yup.

You're welcome.

That's why I hate drivers(either kernel or user mode), if it causing memory leak, only reboot or add more RAM will solve it.
Unless it is from Nvidia for example, just find reproduce step(reopen MSI AB frequently will cause memory leak) and report to them, last time I did it and just 2 months, fixed.

Also try keep your drivers in least, crashing of system(BSoD) is always by drivers, like mine is USB charger+ from Asus.

https://docs.microsoft.com/en-us/windows-ha...and-kernel-mode