Hi kszaq I downloaded the 8.1.8 .gz file to create an image on my SD card with the LibreELEC.USB-SD.Creator.Win32 tool.
I own a 3 GB RAM device (a docooler M9S-Pro) and I got the same result when I check it into the memory section into Android.
When I let the original dtb of the .gz file and boot on LibreELEC "live" I've got only 806 MB memory. If I tried to replace the original dtb.img by the renamed gxl_p212_3g.dtb file the SD card doesn't boot (I'm stucked on the 905x logo).
Have you any idea why I've got issues about memory space or any suggestion to check stuff about this issue ?
Edit : I try my SD card on a totally new device (I just receive it) and as the "old" I can't success to launch it with the renamed 3g.dtb but I success with the original dtb. But surprisely this time LibreELEC displays 1791 MB.