Set your project dimensions (e.g., 16:9 for YouTube or 9:16 for TikTok) using the drop-down menu located immediately under the Preview Pane Smart Render: Settings > Preferences and enable Smart Render
This version is designed for creators who need a balance of speed and advanced creative control: Split Screen Template Creator: Corel VideoStudio Pro X11 v21.6.0.61 -x86x64-