I have 2 short .gif files in my video. While previewing my project, the visual glitches/freezes when trying to view them, as if it can't handle it (audio remains playing smoothly). I just purchased a new PC that I know can handle such a small task. Is there a setting within Vegas that I need to adjust? Any & all help is GREATLY appreciated. Thank you!

PC specs: Cyberpower PC model# GMA4400BST AMD Ryzen 7 3700X 3.6Ghz, 16GB DDR4 Memory,

AMD Radeon RX 580 8 GB, 240GB SSD & 2TB HDD