Losing video signal while system is under load.

Hi!

This has been a problem for a while now. In random intervals while I'm using my computer a snapping sound is heard from the stereos and it loses signal to the monitor. It happens more often if the system is under load, like gaming or defragging. Nothing brings the signal back except rebooting by pressing the power button for a few seconds. Ctrl+Alt+Del does nothing. I used to have the Gigabyte B450-I AORUS PRO WIFI as motherboard but changed it to the Mortar Max in hopes of fixing the probem. If something the tilt happens less often now and only while gaming. I've updated all the drivers on my GPU and the bios on the new motherboard is up to date. I haven't realy messed around with the bios settings expect rising my memory speed to 3200 because I read the lower speeds could be causing the tilt. I'm afraid the problem might be with the GPU because the Ryzen doesn't have integrated graphics that I could test if the tilt happens with that connection also. All help is much appreciated.

My system:
CPU: AMD Ryzen 5 2600 3.4 GHz 6-Core Processor
Motherboard: MSI B450M MORTAR MAX Micro ATX AM4 Motherboard
Memory: G.Skill Ripjaws V Series 16 GB (2 x 8 GB) DDR4-3200 CL16 Memory
Storage: Western Digital Blue 500 GB M.2-2280 Solid State Drive
Storage: Toshiba P300 2 TB 3.5" 7200RPM Internal Hard Drive
Video Card: Asus Radeon RX VEGA 64 8 GB ROG STRIX Video Card
Case: Fractal Design Define Mini C MicroATX Mid Tower Case
Power Supply: Corsair TXM Gold 750 W 80+ Gold Certified Semi-modular ATX Power Supply
Operating System: Microsoft Windows 10 Home OEM 64-bit