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Question New computer - GPU spikes and game/video stutters

Jun 4, 2020
Hey guys. Just yesterday I received my brand new computer, and I'm already running into some weird issues. The first one started when I attempted playing Mass Effect 2 on it. For around 5 minutes everything ran smoothly, and then suddenly I've noticed both video and sound starting to stutter. It became a constant thing, and the screen would stutter at least once every 10-15 seconds. I checked my GPU and I noticed some weird spiking going on. Restarting the PC did not change anything, and the problem started to repeat itself every time, but now - from the very second I'd launch the game, no longer only after 5mins.

The more I tested - the weirder things got, even YouTube videos started to stutter, or .mkv movies that I played on the PC. I also tried playing Witcher 3 - stuttering is still there (more so in cut-scenes), but not nearly as often. However, when I played Dead By Daylight - NO stuttering whatsoever. I'm honestly lost at this point. Any ideas? This is REALLY discouraging, issues straight out of the box.

All drivers are up to date.

My PC specs:

CPU: AMD Ryzen 5 3600 6x 3.60GHz (100-100000031BOX)
Mainboard: ASUS Prime B450M-A (90MB0YR0-M0EAY0)
GPU: MSI Radeon RX 580 Armor OC 8G (V341-064R)
RAM: 16GB Corsair Vengeance LPX DDR4 PC-3200 Kit 2x8GB Black (IEIG5U22)
SSD: 240GB Crucial BX500 High Performance SSD (CT240BX500SSD1)
HDD: 1TB Seagate Barracuda 1000GB SATA (ST1000DM010)
PSU: 600W be quiet! System Power 9 (BN247)