20 hours after posting, no reply from TP-Link support. I also opened a case with TP-Link support; not a peep. What is the problem? Do TP-Link not stand by their products?

I am having difficulties with a BE800 which will download up to 950mb/sec on a 1gb/sec symmetric broadband link without problems, but typically seems to support only 1mb/sec – 250mb/sec of upload...