This usually indicates a driver conflict. Reinstall the Rockchip drivers and try again.
Before you start, gather these items. Flashing the wrong firmware can your device. rk3229 android 10 firmware updated
It is a noble effort by the developer community. It transforms a device that is functionally obsolete into a usable modern gadget. However, the hardware limitations of the RK3229 mean that the "smoothness" of the stock firmware is lost in exchange for "compatibility" with modern apps. This usually indicates a driver conflict