Hexiwear Oled performance

Hello, I am developing a proejct using Hexiwear and the MBedOS online editor
I am also using the Hexi_OLED_SSD1351 library to manage the oled display
What I noticed is that the oled rendering performance is very slow, when rendering an image you can actually see it being rendered one line at a time.
I wanted to ask if anyone is using hexiwear end if this level of performence is normal.
The stock application that comes with hexiwear does not seem to have this issue


Luis Lima