[SM-920F] Everything crashing, problem with memory?

Hey everybody. I have Galaxy S6 SM-920F, with BOG8 XEO (Poland) firmware, COH2 modem + bootloader flashing via Odin, XtreStoLite 2.2 + Aliance Framework v3.1 and UniKernel v7. Everything worked very well about 1 Month... But I have no idea why my Phone is crashing... stock messege app crash when I open the keyboard.. i must install second messegae app to work.. scrolling is crashing, some apps crashing (Eurosport, gmail, sport.pl, filmweb, groupon, OneDrive, Peel Smart Remote, WeatherPro and something else). I try to format /cache, /data, /system to f2fs format, wipe everything and install firmware BOG8 via Odin, when Phone is clear (without any application) work well, but when I install some apps everything starts crashing.. On stock firmware the problem repeat. Without installation any apps Phone works, with apps - crash.

Wipe, format, clear installation, re-partition with pit - nothing helps. What should I do? My knox is 0x1, so my warranty is invalid..