650 on hats and around 700-750 on flats.
No rush
Just to add to this, I'm a one man shop and usually I'm doing something else while embroidering too. That is why the low speeds.
I usually wash screens, do the design work, expose.........
If I could be doing only embroidery, I was sewing flats at 850 and hats around 700-750.
There is nothing wrong with the machines so I would have to slow down.