Why Do Some Cloud Storage Services Slow Down When Uploading Large Files?

hemortring75

I've been moving several large project files to an online storage service, but the upload speed drops significantly after a while. My internet connection remains stable, so I'm wondering if file size, encryption, background syncing, or server limitations are responsible. I've already tried different browsers and devices with similar results. Is there a way to improve transfer performance or optimize settings for handling large files? I'd appreciate hearing what has worked for others and whether certain factors usually cause this issue.