Thanks for posting and a warm welcome to the community.
I'm sorry to read that you are having issues with packet loss whilst playing Dota 2.
From checking your connection, there is a high peak time traffic fault in your area which is causing slow speeds. Our networks team are investigating the problem and are improving bandwidth and performance to help with this issue. The reference number is F004742245 and with a review date of 21st December.
Do you notice the packet loss at all times of the day?
Is the device you are playing Dota 2 connected through wired or wireless?