1st you can reinstall your Composer
Download the last version of Composer frp, asiga.com
Find in "Windows Apps and Feature" the installed Composer program and uninstall it.
Start the downloaded Composer installation pack as administrator and complete installation.
Check how it is working
2nd thing could be graphics drivers or preferred graphics card for the system.
Download and install the last version of drivers for your Graphic card
To select the preferred video card for Composer, do next
Press Win+Q and type "Graphics Settings"
Click Browse and find installed Composer on your computer.
By default, it is installed in C:\Program Files\Asiga\Composer\composer.exe
Composer will appear in the list of programs.
Press Options and select High Performance.