can confirm it is within room related (is each room a server?)
just had a match on KOTH where everyone got kicked, also a video would not provide information on what is causing the crash because it would only be from your perspective.
This could be so specific that you wouldn't be able record what is causing it unless you checked through the code/logs considering it happens when there is a big match going on.
it could be anything really it could be related to how players are killed as previously stated by Jmc, something to do with skills or even the handler for errors. maybe there is conflicting code or missing code, who knows.