Hi The issue is that your phone can’t handle 4K videos at high speed—it lags or glitches because the processor and RAM are overloaded. Here’s how to fix it:
1. Reduce video resolution: Convert the 4K video to 1080p or 720p before editing or speeding it up. This will make it smooth.
2. Use a lighter video player/editor: Apps like VLC or CapCut handle playback better than heavy editors.
3. Close background apps: Free up RAM before opening the video to reduce glitches.
4. Avoid speeding up too much: High-speed 4K playback is very demanding; try moderate speed changes.
