That's not a bad result at all, all things considered. Maybe try again at 8pm (ish) to see whether it gets worse during 'peak' times (though on Gig1 that's not really a thing, I find). You can still use SQM, you'll just have to put the Hub into modem mode and provide your own router. With a result like yours, though, I wouldn't rush unless/until you find the need.
Thanks for the feedback, I’ll stick with it then, but will try testing again and peak times over the holidays to compare.