Ultimate SQM settings: Layer_cake + DSCP marks

I suspect the wrt3200 will handle around 250Mbps to 300Mbps shaping without running out of CPU. Try setting it to up and down speeds of 200 and watch top -d 1 for the percentage idle, it should stay above say 10% to get good performance, from there bump it up in speed until you get to around 10% idle and then show that speed test result.

20000 is 20 Mbps you need an extra zero :grinning:

Set 200000 both directions. Download may be suffering due to bufferbloat.