您是否测试过网络?在这种情况下，它肯定是网络，而不是VM本身吗? B系列在设计上具有不一致的性能.通过使用一致的系列(例如D/DS)来确保它不是VM.

Have you tested the network? As in, is it definitely the network and not the VM itself? B series has inconsistent performance by design. Ensure it's not the VM by using a consistent series such as D/DS. 

如果仍然相同，您正在运行哪个VPNGW版本?

If still the same, what VPNGW version are you running?

Joe