I have had the product for a few weeks as an Init7 customer, and the problems seem to have been effectively solved. The 1 GBit/s are easily achieved even with bridging (or switching) and stateful firewall.

I also had the NAT leaks (several times a day) with firmware 1.10.9. Since the update to firmware 2.0.1, however, this has no longer occurred.

I have this router in operation both with VDSL/PPPoE and via fibre directly with Init7 (via Copper7/Fiber7). With the latest firmware (1.10.6), I cannot detect any connection interruptions. However, if you could send me a direct link to an article/blog post describing the problem, I would be happy to take a closer look.

Thanks for the answer and effort!
I became aware of the problem through this review: https://www.digitec.ch/de...
The post also just included the link to the corresponding UBNT Forum Topic.
I haven't really read up on it, and don't have enough knowledge to do so. The article mentioned the 1.9.1 firmware.

By the way: What throughput rates do you achieve? Do you get close to 1Gbit/s?