后台应用程序的帧率低

Question

我的问题是，当游戏在前台全屏模式下运行时，我的第二台显示器上的任何应用程序（例如 YouTube 视频、视频，非特定应用程序）都会将其帧速率降低到大约 2-3 FPS。

这似乎是某种我无法追踪的电源管理选项。据我所知，这不是由于 GPU 无法跟上。例如，当帧速率不受限制时，我的 PC 可以以大约 280FPS 的速度玩英雄联盟。如果我使用游戏内选项将其限制为 60FPS，则不会影响后台应用程序的性能。

Summary
        Operating System
            Windows 8 Pro 64-bit
        CPU
            Intel Core i7 3820 @ 3.60GHz    42 °C
            Sandy Bridge-E 32nm Technology
        RAM
            12.0GB Triple-Channel DDR3 @ 533MHz (7-7-7-20)
        Motherboard
            Gigabyte Technology Co., Ltd. X79-UD3 (SOCKET 0)    37 °C
        Graphics
            DELL U2713HM (2560x1440@59Hz)
            DELL U2713HM (2560x1440@59Hz)
            1280MB NVIDIA GeForce GTX 570 (Gigabyte)    58 °C
        Hard Drives
            212GB Volume0 (RAID)
            1863GB Western Digital WDC WD20EARS-00MVWB0 (SATA)  36 °C
            1863GB Western Digital WDC WD20EARS-00MVWB0 (SATA)  34 °C
        Optical Drives
            No optical disk drives detected
        Audio
            ASUS Xonar Essence STX Audio Device
Operating System
    Windows 8 Pro 64-bit
    Computer type: Desktop
Graphics
    Monitor 1
        Name    DELL U2713HM on NVIDIA GeForce GTX 570
        Current Resolution  2560x1440 pixels
        Work Resolution 2560x1400 pixels
        State   Enabled, Output devices support
        Multiple displays   Extended, Secondary, Enabled
        Monitor Width   2560
        Monitor Height  1440
        Monitor BPP 32 bits per pixel
        Monitor Frequency   59 Hz
        Device  \\.\DISPLAY4\Monitor0
    Monitor 2
        Name    DELL U2713HM on NVIDIA GeForce GTX 570
        Current Resolution  2560x1440 pixels
        Work Resolution 2560x1400 pixels
        State   Enabled, Output devices support
        Multiple displays   Extended, Primary, Enabled
        Monitor Width   2560
        Monitor Height  1440
        Monitor BPP 32 bits per pixel
        Monitor Frequency   59 Hz
        Device  \\.\DISPLAY5\Monitor0
    NVIDIA GeForce GTX 570
        Manufacturer    NVIDIA
        Model   GeForce GTX 570
        GPU GF110
        Device ID   10DE-1086
        Revision    A2
        Subvendor   Gigabyte (1458)
        Series  GeForce GTX 500
        Current Performance Level   Level 3
        Current GPU Clock   845 MHz
        Current Memory Clock    1900 MHz
        Current Shader Clock    1690 MHz
        Voltage 0.988 V
        Technology  40 nm
        Die Size    520 mm²
        Release Date    Dec 07, 2010
        DirectX Support 11.0
        OpenGL Support  5.0
        Bus Interface   PCI Express x16
        Temperature 57 °C
        Driver version  9.18.13.2018
        BIOS Version    70.10.55.00.01
        ROPs    40
        Shaders 512 unified
        Memory Type GDDR5
        Memory  1280 MB
        Bus Width   64x5 (320 bit)
        Filtering Modes 16x Anisotropic
        Noise Level Moderate
        Max Power Draw  219 Watts
            Count of performance levels : 3
                    Level 1 - "Default"
                        GPU Clock   50 MHz
                        Memory Clock    135 MHz
                        Shader Clock    101 MHz
                    Level 2 - "2D Desktop"
                        GPU Clock   405 MHz
                        Memory Clock    324 MHz
                        Shader Clock    810 MHz
                    Level 3 - "3D Applications"
                        GPU Clock   845 MHz
                        Memory Clock    1900 MHz
                        Shader Clock    1690 MHz

我尝试过的事情：

1）更新显卡驱动程序

2）将 Windows 电源模式设置为高性能

3）将 Nvidia 全局性能设置重置为默认值

Answer 1

...... 它会优先处理你当前正在使用的应用程序，而不是其他应用程序。将更多资源分配给前面的应用程序而不是你看不到的应用程序是有道理的...... LoL 没有性能影响的原因是因为显卡可以腾出资源分配给其他应用程序，因为有上限。