Well, I wasn't experiencing these reboots before I started flashing custom ROMs...
---------- Post added at 04:39 PM ---------- Previous post was at 04:38 PM ----------
But my last OOS version was 5.6 .. would going back to 5.8 then RR fix it ?
first simply update to latest firmware, reason 1, it's lates and hence the most developed, reason 2, you asked and were told to do so.
don't expect any warranty in writing, thy and see and come back with either reporting success or, in case, that it did not helpe and then we see further.
5.8 is newer hence you cannot go back to 5.8 from 5.6 but update to 5.8. btw it has been mentioned and discussed all over the place and one should never report issues as long as one is not on the lates rom, firmware or any other software version, especially if the thread is not full of the same issue which hint 99.9% to user space issues, = your setup.