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boly007  
#1 Posted : Sunday, April 20, 2025 3:23:42 AM(UTC)
boly007

Rank: Newbie

Groups: Registered
Joined: 4/20/2025(UTC)
Posts: 2
Iraq
Location: Karbala

Hi guys
When I open the first vmix all is fine
the problem starts as soon as I open the 2nd instance of the vmix
the other instance that now gone to background FPS drops and says GPU overloaded when I switch to that instance All things returns OK and the other one throttle

The PC is i7-265K and GPU 3080 it's not the PC weakness because I open the 2nd Instance blank with no input

anyone faced this Problem?
boly007  
#2 Posted : Sunday, April 20, 2025 7:32:50 PM(UTC)
boly007

Rank: Newbie

Groups: Registered
Joined: 4/20/2025(UTC)
Posts: 2
Iraq
Location: Karbala

Found it

the reason is that I have a Decklink Quad 2 with 8 outputs , so I control output 1-4 from first Vmix and 5-8 from the second
when both Externals is on the other Vmix Falls

so any idea ?
admin  
#3 Posted : Sunday, April 20, 2025 8:27:10 PM(UTC)
admin

Rank: Administration

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Joined: 1/13/2010(UTC)
Posts: 5,198
Man
Location: Gold Coast, Australia

Was thanked: 4446 time(s) in 1556 post(s)
Please note, multiple instances of vMix is not supported. The checkbox to enable it is hidden behind Advanced Settings with a specific warning not to enable for this very reason.
There is only a single audio mixer per computer in vMix, so things like External Output etc that rely on audio will not work properly.

Sorry about that.
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