I have S3 Advanced (MT6752, 3 GB RAM, 32 GB internal) and three weeks ago I installed madOS_8.1.0_s3_h560_20190722.zip and open_gapps-arm64-8.1-nano-20171224-UNOFFICIAL.zip. Of course I updated latest apps via Google Play.
Sometimes taking still photos works, but often the camera app hangs. I have used Footej Camera 2 and Open Camera, both have this problem. Also WhatsApp hangs sometimes when I'm typing (I use Gboard).
Otherwise I'm very satisfied with madOS_8.1.0_s3_h560_20190722, thanks!
#include /* * Your warranty is now void. * * I am not responsible for bricked devices, dead SD cards, * thermonuclear war, or you getting fired because the alarm app failed. Please * do some research if you have any concerns about features included in this ROM * before flashing it! YOU are choosing to make these modifications, and if * you point the finger at me for messing up your device, I will laugh at you. */