I've tested LMK in updated kernel from .121 FW. It's finally stable, no sudden freezes or memory leaks even on RAM-intensive apps. I was able to fill my 8GB of ram up to 6000MB when low memory flag kicked in. It's not as high value as on Pie (7.2GB), however after killing it the phone remained responsive after background processes relaunched. It makes it definitely better than bugged .110 build.