From the very beginning of the game, every single second of gameplay took about two seconds in realtime.

While none of us recorded the game while it was happening, the game looked something like this (https://gfycat.com/gifs/detail/rarewetbuzzard), which I found in one of several reddit threads from other users who had a similar problem (For example, https://www.reddit.com/r/DotA2/comme..._counts_for_3/).

The match ID is 3810314389, and all players involved were experiencing the same thing, so we ended up just base-racing out of frustration to get out of the game. We didn't notice anything unusual in the time leading up to gamestart. I can provide other details as necessary.

Is there anything that can be done about this, or a way to let us re-try the Battlecup?

Thank you for your time.