1.) There is a memory leak, after a couple of hours of constant usage the box locks up with 100% memory utilization.
Below is the quote from kszaq when i was testing the Dev builds prior to Public Release.
He is aware.
"The memory usage is caused by how Amlogic's video decoder allocates memory for playback in S905 devices: it uses Continuous Memory Allocator to reserve huge amounts of memory and it becomes temporarily unavailable to Kodi."
Whilst some improvement has been made with updates, I am now resigned to believe the S905 needs 2gb of ram and 1gb boxes are not worth buying unless you're prepared to reboot every hour during use.
I have an old S805 1gb / 8gb with the latest LibreELEC-S805.MXQ.arm-126.96.36.199 and the memory used by that box is barely 200mb all day long.
Hope this helps you.