Under Windows, I can see low flickering even when moving cursor over main menu items to change selection. But some components flickers much more. Primary, its color choosing lists and combo boxes. For example, see Settings - Appearance: try to scroll ListView and move cursor over ComboBox items.
Under .NET (WinForms) I usually fix such issues with double buffering.
There are a lot of similar reports: https://bugs.documentfoundation.org/buglist.cgi?list_id=655334&query_format=advanced&resolution=---&short_desc=flicker&short_desc_type=allwordssubstr
You are encouraged to go through them and close your own as a duplicate of the most appropriate one.
Thank you for contributing. If you want to continue in any way: https://wiki.documentfoundation.org/QA/GetInvolved
*** This bug has been marked as a duplicate of bug 105863 ***