Speed dropping issue on ExpressVPN II | ExpressVPN的速度下降问题 2

So, I'm encountering this weird speed dropping issue again on ExpressVPN after the 8th December update. The service is once again restored after the server wide upgrade announced on the status page for Chinese users at 8th of December. Basically I am able to connect to the 6 recommended servers but after a few minutes of usage (in rare cases a few hours but mostly a few minutes) the speed starts to drop (I also found out that downloading large files accelerates the speed dropping) but after disconnecting and reconnecting, the speed picks up again but it will drop again after a few minutes, rinse and repeat.


This issue only occurs on the Automatic protocol aka the UDP protocol, it does not occur on Lightway, IKEv2 L2TP and even OpenVPN manual configuration. I have done multiple troubleshooting and it seems like that I'm at my wit's end now, I really couldn't figure out what is causing this issue.

So, I'd like to ask here, Does anyone experience similar issue? If so, what's your ISP, Mine is unicom currently and what's the system of your device, mine is Windows 10. If you have experienced similar issue in the past or are currently experiencing it, please leave a comment below, any help is appreciated it.

PS: the issue originally happened at early September with the release 7.12.4 update that restored the service for Chinese user. The issue lasted to 24th October, it was temporarily fixed during 24th October to 7th December where there was another update that restored the service at 24th of October by ExpressVPN, but after the 8th of December (also another update on that day by ExpressVPN) the problem occurred again and it's still occurring for me. So the issue's timeline aligns with ExpressVPN's updates.

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所以,我在12月8日更新后,ExpressVPN又遇到了这个奇怪的掉速问题。12月8日在状态页上公布了针对中国用户的服务器全线升级后,再次恢复了服务。基本上我可以连接到6个推荐的服务器,但是使用几分钟后(极少数情况下是几个小时,但大多数情况下是几分钟)速度就开始下降(我还发现下载大文件会加速速度下降),但是断开连接后再重新连接,速度又恢复了,但是几分钟后又会下降,反复循环。


这个问题只发生在自动协议也就是UDP协议上,在Lightway、IKEv2 L2TP甚至OpenVPN手动配置上都不会发生。我已经进行了多次故障排除,现在看来,我已经束手无策了,我实在想不出是什么原因导致这个问题。

所以,我想在这里问一下,有没有人遇到类似的问题?如果有,你的ISP是什么,我的目前是unicom,你的设备是什么系统,我的是Windows 10。如果你过去遇到过类似的问题,或者目前正在遇到类似的问题,请在下面留言,任何帮助都是值得感谢的。


PS:该问题最初发生在9月初7.12.4版本更新后,恢复了中国用户的服务。这个问题一直持续到10月24日,10月24日到12月7日期间暂时得到解决,10月24日ExpressVPN又进行了一次更新,恢复了服务,但是12月8日之后(当天ExpressVPN也进行了一次更新)这个问题又发生了,现在我还在发生。所以问题的时间线与ExpressVPN的更新一致。

已邀请:

hb121cn 【新手级】

大陆中部省,联通。之前一直用nord,上个月由于实在受不了晚间的速度又买了express。您说的这个问题我也出现了,而且并不是只有晚间才出现,全天的任何时间都可能会出现。win7系统,自动协议,洛杉矶5节点。我不知道您手机使用的情况如何,我这里用手机客户端连接后有时会出现加载特别慢的情况,但连接还在没有断开。我觉得这种情况是不是也符合您描述的这种问题。顺带吐槽一下,晚间时段express没有比nord好多少啊。。。。。我一度以为是运营商限制流量,后来我用另一个备用未付费的vpn测速相同的时段能有6mb以上的下载速度。。。。。nord和express两个难兄难弟都是100-150kb/s上下。。。。。。。T_T

yyq1991 【新手级】

目前ex基操 所以我闲置了ex换机场 受不了就换 价格太贵现在再推荐ex多少有点那啥

御剑88172 【熟练级】

express现在基本报废状态,白天nord其实不跑下载,速度够用,4k也随意看。花钱上expressvpn的肯定是指望晚高峰有优势,现在也不太行。这个降速问题下载文件时我遇到过。apple官网下载系统更新包,刚开始很快,然后慢慢降下来,需要暂停下载之后再重新开始,用downie下载youtube视频也是如此,但不需要断开vpn连接。看YouTube视频速度挺稳定。南方省份联通,udp协议。// 没有找到解决办法,就这么将就用着。

6fEUuZLvx6Ti4a 【新手级】

中国移动,使用openvpn UDP的速度很快,自动协议非常慢

larry 【熟练级】 - I'm a network engineer that currently lives in China.

well I'm still trying to figure this out. so any helps/experiences are appreciated.

好吧,我还在试图弄清楚这一点,所以任何帮助/经验是感激。

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