Hi,

Try rebooting the Mac, updating the OS, video drivers and mouse drivers.  If 
you use two screens, put QGIS on another screen. Try another mouse, change the 
mouse batteries. Do you have the same problem with other software?  Try working 
with Saga or Grass to see if you have the same problems.  

Nicolas Cadieux

> Le 2 mars 2020 à 05:40, Andrew_dot_me <[email protected]> a écrit :
> 
> My cursors have started flickering when moved. The flickering stops when the 
> cursor is still but it is making it very hard to draw a polygon. I have tried 
> restarting, resetting the gui, opening an older project and switching to 
> another qgis version but the problem persists. I can see anything in the 
> preferences which might be the casue. I am using 3.10 on a Macbook Pro 
> running os Catalina.
> 
> And advice would be very welcome.
> 
> Andrew
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