New Arris S33v2 - Upload speed only 5mbps

According to the plan I'm on, I should be getting 1200/200.  I get around 900 download, but only 5Mbps upload with a new Arris S33v2 modem.

I have seen old conversations on this forum about upload being limited on customer-owned modems (nice of Comcast to hide that fact) but others are reporting 200 upload even with non-Comcast modems.

What's the current state of upload speed with customer-owned modems?  Should I be getting faster upload?