When you were getting 800-980 speeds. How many devices was connected? How many now? Have you added any new plugins to your browser? Did you test on different browsers? Try different speed test sites? Try a live boot of a Linux flavor to weed out anything that might be Windows related?
You can live boot distros like Mint, and Ubuntu both very user friendly Linux. Test speed that way. If your internet speed is back up, your speed decrease is on Windows side.
When you were getting 800-980 speeds. How many devices was connected? How many now? Have you added any new plugins to your browser? Did you test on different browsers? Try different speed test sites? Try a live boot of a Linux flavor to weed out anything that might be Windows related?
You can live boot distros like Mint, and Ubuntu both very user friendly Linux. Test speed that way. If your internet speed is back up, your speed decrease is on Windows side.