There were approximately 45 non-BSOD crashes during the past month.
The BIOS is old:
Version/Date American Megatrends Inc. F2, 11/9/2017
Missed upgrades:
Update CPU Microcode to address a potential security vulnerability in CPUs, see more:
INTEL-SA-00233
Support JEDEC DDR4 native 3200MHz memory
Update iRST to improve Optane compatibility with future 9th Gen CPU
Support of future 9th Generation Intel® Core™ processors
Update CPU microcode
Update Intel IRST version
Improved system performance and stability
Update CPU microcode
Improved system performance and stability
Optimized for Intel® 9th Gen Core™ Processors
Update CPU microcode for upcoming CPU
Improve windows boot time
Support Optane memory
Update CPU Microcode
Improve graphic card compatibility
Update intel ME for security vulnerabilities
1) Upgrade the BIOS to the most up to date non-beta BIOS:
F2 > F14
Z370P D3 (rev. 1.0) | Motherboard - GIGABYTE U.S.A.
2) Consider swap testing the PSU