I have a fault open with Zen Support, and the latest email from them said that they had an outage booked for last night 29/08/17 which might solve the issue. I am still getting packet loss this morning and poor speedtest results. I am fed up with this situation, and if it is not rectified very soon I will be leaving Zen.
Oh my, not good!
Yeah, I'll open a ticket with Zen Support as well then. What sucks for me is that I recently restarted a new contract (speed regrade) so I could get DLM reset without needing an engineer after discovering what I believe to be my homeplugs causing some internal issues (where an engineer I doubt would've just been booked to just reset DLM only). Lets hope this can be sorted out or moving ISP will be a little expensive.
I think the quality of Zen Technical support has been downgraded just lately maybe the bean counters are responsible for this. Zen were a top recommended Internet supplier by the Which magazine not too long ago. My impression from email correspondence with them, that this is no longer the case.
I am synced at 79.997 down and used to get 75Mbps on both single and x6 threads, but no longer get anywhere near that at any time of the day or night.
I run various VOIP applications here such as MMDVMHost and internet telephony line from Sipgate, the packet loss is severely affecting this and the packet loss has exceeded 10% at times.This is the suite of software that I run on a Raspberry Pi which enables me to communicate via DMR and P25 Digital Audio.
I am running a similar Draytek router as yourself Vigor 2860Vn-Plus.
I did try the Zen supplied router as suggested by Zen technical support back in March when this packet loss first started, but it made no difference to packet loss and I also lost my IPV6 connectivity.