# INTELLIGENTUPDATE System Variable [GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [System Variables](Help%20System/GSTARCAD/2022/System%20Variables/(System%20Variables).md) → [I](Help%20System/GSTARCAD/2022/System%20Variables/I/(I).md) **Function Description:** The INTELLIGENTUPDATE system variable is used to control the graphic refresh rate. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 20 | The default value is 20 frames per second. If confronting some problems about generating drawings or timing, users can set it to be 0 to turn it off. The INTELLIGENTUPDATE system variable is used to stop drawings updating until timer expired. The timer will be reset in the subsequent update.