Stereo Mix Issues

I know what Stereo Mix is supposed to do, record all sound going inside the device that i’m using, What i find myself wondering is if it’s possible to forbid it from recording sound from certain applications without having to disable sound entirely from said application.
For context, i use Stereo Mix to play music on Roblox by putting it as an Input (Aka sound emitter) in Roblox, but it also records the roblox audio and plays it back to Roblox with an annoying delay, so i am trying to know a way for it to stop recording Roblox’s sound entirely, without disabling Roblox’s sound.
(I hope that was clear)