We use OpenGL (Open Graphics Library) for graphics rendering in our products. It is used to interact with your graphics processing unit (GPU) to achieve hardware-accelerated rendering enabling more processing power from the CPU to be focused on audio rendering.
In certain instances OpenGL can cause some issues if not properly supported on your computer. Addictive Drums 2, RC-20 Retro Color and XO which rely heavily on user interaction may exhibit a slow or sluggish GUI with OpenGL enabled. You can try turning it off to see if this makes any difference. To do this click the menu icon in the top right corner of your plug-in and select "UI Scaling & Settings". Click the checkbox in front of "Use OpenGL hardware acceleration" to disable OpenGL for that product. You need to restart the plug-in for the changes to take effect.