Lately...

The YouTube app itself often has bugs and can be slow! It's a similar phenomenon to Playio where it gets sluggish when the server is under load, so trying a different time might help! Also, communication can slow down due to weather! For communication, it's weak against rain, so there might be a decrease in line speed! However, adjusting the video quality settings is an effective measure when experiencing slow speeds or sluggishness! Try using other apps too! Check out individual comment posts! I'm sure there are helpful tools out there!