Or Right click desk top and select 'Display settings' then 'display adapter properties' and then the monitor tab - or do both...
- Right click the desk top
- select Nvidia Control Panel
- Click on change resolution
- check 1440p - native (if not set already)
- change refresh to 75
- Apply changes
Thank you @Plec fresh rate in NVidia control was set 60hz so changed to 75 and saved.
Going to check Division again now.