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VEGA 64 Performance Issues In Apex Legends and Others

Question asked by aponusky on Mar 15, 2019
Latest reply on Mar 19, 2019 by coreytv


Monitor: LG 34UM60-P 34" Ultrawide Freesync

GPU: ASRock Phantom Gaming X Vega 64 - 8GB

CPU: Ryzen 5 2600X


RAM: CORSAIR Vengeance LPX 16GB DDR4 2933Mhz

PSU: Thermaltake Toughpower 750Watt 80 Plus Gold


OS: Windows 10


I've been trying to figure out the cause of my VEGA 64 performance issues since I bought it in October of last year, and I've almost given up...I can't seem to figure out why I'm unable to maximize the usage of my GPU while in any games (sits around 60-85%), as my CPU seems to be idle for the most part. For example:


Game: Apex Legends

Game Settings: Maximum In-Game Video Settings

Resolution: 2560x1080

CPU Usage: 30-50% 

CPU Temps: 33-65 Celsius

FPS: Unlocked and varies from 63-140fps

GPU Utilization: 60-85%

GPU Temperature: 40-76 Celsius


As you can see, there are some huge performance issues, as the FPS should not vary that much in a game that is supposed to run as smooth as Apex Legends. Without a FPS cap, I still cannot get the GPU to reach 100% usage, and since the CPU is hardly being utilized, it's hard to imagine that it could possibly be causing a bottleneck. The Vega 64 seems to constantly be underclocking itself during performance-heavy parts of the game, which causes some serious stuttering when parts of a map suddenly change. The weirdest part is that when I lower all of the graphics settings to their minimum values in the game, there only seems to be about a 10-20% performance boost....something just really seems off, and I'm thinking it's the drivers. Before anyone asks; the GPU has two separate 12-volt rails attached, and wattage and voltage seem to be nominal while playing.


Any suggestions? Or has anyone found a setting in the drivers that seems to be limiting the cards' potential?