For me, new writers should upload new chapters as frequent as possible, like every other three days or less to gather enough reads. In terms of those who have a stable fan base or readers should upload not more than every week to satiate reader's intention and interest to their published story.
In my case, I published around every other four days, to be specific, I scheduled my next chapter so that I wouldn't stress about making it to my own schedule. Like what I did to my newly published story in this platform, The Writer in Some Kind of Fantasy World.
But the most important of all, it's better to upload in your pace while hooking reader's attention in your story.