iTunes Video Playback Problem

So I've bought a new laptop when I didn't need my old one, and I've imported all my iTunes stuff into it. However whilst my old laptop could play videos on it (albeit in a smaller resolution from its smaller screen), this new laptop struggles with video playback. Whenever I play anything, regardless of the video quality (even if I switch it to Standard Definition), the video stutters and lags incredibly whilst the audio continues on. I've tried changing the preferences to fix the issue but it still persists.

Here is my technical mumbo-jumbo:

- Uses Windows 10

- Acer Nitro 5

- Processor: AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx 2.00 Ghz

- RAM: 8.00 GB

- System type: 64-bit

Please help!