AdguardTeam
When QUIC protocol is enabled connection is very slow
Please answer the following questions for yourself before submitting an issue.
- [X] I checked the knowledge base and found no answer
- [X] I checked to make sure that this issue has not already been filed
AdGuard VPN version
Version 2.11 Nightly 4
Operating mode
Integration with AdGuard
Which DNS server do you use?
Custom DNS
DNS protocol
DNS-over-QUIC
Custom DNS
No response
Environment
- OS: Android 14 One UI 6.1
- Device:Samsung Galaxy S24 Ultra
Root access
- [ ] yes, I have it
Issue Details
Steps to reproduce:
- Switch AdGuard VPN Protocil to QUIC in AdGuard VPN for Android
- Might have to wait a while before it starts to show slow connections and slow loading images
Expected Behavior
Should be fast connections when using QUIC
Actual Behavior
Slow speeds when using QUIC protocol in adguard vpn for Android with sometimes not loading at all.
Screenshots
No response
Additional Information
No response
@Batman2814 how often does the problem recur? Is the connection slow for a long time or does the connection normalize later? If you have to wait a while for the problem to recur, does that mean the connection speed is normal at first?
It seems to be better after updating to version 2.11 Nightly 5 for Adguard VPN for Android. I'll keep monitoring it to let you know for sure, so if you could keep this issue open until I confirm, that would be great.
It seems to be okay for now. The only issue is when using Speedtest to run a speed test, the results show low speed results, even though I know I have fast speeds.
@Batman2814 how often does this happen? after changing protocol do you wait for some time? 10-15 sec. I checked this on my device, but I don't have this problem repeatedly
It usually happens hours after that when surfing the web or going through social media like Instagram. X (formally Twitter) server connection freezes, and in order to fix it, you have to disconnect the VPN and then connect again.
When QUIC Protocol is enabled on AdGuard VPN for Nightly Version 2.11 Nightly 6, the speed test download test shows slow speeds and uploads too.
https://github.com/user-attachments/assets/122472ec-a1c6-4330-bb6b-d52111cd3932
When QUIC is disabled and HTTP/2 using AdGuard VPN Protocol in AdGuard VPN for Android Version 2.11 Nightly 6 the speeds test are normal fast like it should be.
https://github.com/user-attachments/assets/60c43022-4762-4275-ab83-b0d65268e48c
@Batman2814 thank you! Right now there are speed issues to HTTP/3 (QUIC) sites via QUIC protocol, we are working on resolving this issue, please wait
Could you please provide an estimated timeline for the resolution of this issue and specify the version in which the fix will be implemented?
@Batman2814 there is no exact timeline at the moment, we need to investigate the issue. I think in one of the next updates. Please wait
Any news on addressing the issue with the speed issues to HTTP/3 (QUIC) sites via QUIC Protocol that you guys said you were working on resolving? Really appreciate an update from you guys please and thank you.