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Test for those who are skeptical about EMI and tweaks
Posted: 19 May 2024, 14:41
by cursed-gamer
Yesterday during faceit session one of my teammates had speakers on so I could hear myself. There would be nothing concerning about it if weren't for the fact, that I could hear what I say after 2 seconds delay. Assuming that mine and his ping were about ~30 ms, at best, the total travel time of my voice and back shouldn't be more than 200 ms. Voice chat in CS2 uses UDP protocol according to the informations I found.
That's the simplified path of my voice.
voice generated

server

voice received and sended back at the same time + input lag

server

voice received
Do a test with your friend on a faceit server or any other that is not located in your vicinity. Record a sound track with OBS and analyse the time between microphone input and your voice received. If the time is much higher than expected, then the answer lies in the quality of your internet connection.
Good luck
Re: Test for those who are skeptical about EMI and tweaks
Posted: 19 May 2024, 16:44
by Chief Blur Buster
Wrong forum area, moved.
Discussion of EMI (including legitimate solutions) should be in the other forum area.
Re: Test for those who are skeptical about EMI and tweaks
Posted: 19 May 2024, 20:27
by Thatweirdinputlag
cursed-gamer wrote: ↑19 May 2024, 14:41
Yesterday during faceit session one of my teammates had speakers on so I could hear myself. There would be nothing concerning about it if weren't for the fact, that I could hear what I say after 2 seconds delay. Assuming that mine and his ping were about ~30 ms, at best, the total travel time of my voice and back shouldn't be more than 200 ms. Voice chat in CS2 uses UDP protocol according to the informations I found.
That's the simplified path of my voice.
voice generated

server

voice received and sended back at the same time + input lag

server

voice received
Do a test with your friend on a faceit server or any other that is not located in your vicinity. Record a sound track with OBS and analyse the time between microphone input and your voice received. If the time is much higher than expected, then the answer lies in the quality of your internet connection.
Good luck
Even if it's the same connection to the server, in theory, I don't think all packets are the same! Neither in their marking or priority not even the same UDP port lol. I would assume something as voice chat would have the least priority to be processed on the server level. However, 2 seconds is still a lot.
Re: Test for those who are skeptical about EMI and tweaks
Posted: 20 May 2024, 04:02
by cursed-gamer
Comms are crucial. The delay was indeed high. I said something like „I’m gonna smoke ramp” and then after 2s break I heard my it in my headphones.