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Virtual audio cable discord distortion2/23/2023 ![]() ![]() "slows down the guest OS a little" the same Even with a highend Core i-7 (Sandy Bridge, 4 cores, 8 threads) i had interruptions in the sound.įor audio to work flawlessly, disable the IO-APIC, set the cores to 1. With IO-APIC enabled the sound was choppy, if disabled everything works.Īnd if it was enabled the number of the used cores doesn't matter. Also, the use of an I/O APIC slightly increases the overhead of virtualization and therefore slows down the guest OS a little. However, software support for I/O APICs has been unreliable with some operating systems other than Windows. With an I/O APIC, operating systems can use more than 16 interrupt requests (IRQs) and therefore avoid IRQ sharing for improved reliability.Įnabling the I/O APIC is required for 64-bit guest operating systems, especially Windows Vista it is also required if you want to use more than one virtual CPU in a virtual machine. ![]() Advanced Programmable Interrupt Controllers (APICs) are a newer x86 hardware feature that have replaced old-style Programmable Interrupt Controllers (PICs) in recent years. ![]()
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