Can game creator be used with sectr stream or any other streaming tools?
I wouldn't want to risk it and say a blatant "yes" without proper testing this, but it should. As far as we know, streaming tools basically instantiate/load prefabs that represent portions of a map ahead of time. You can easily add "enemy characters", Triggers or anything included in Game Creator on these chunks of maps and they will be brought with the streamed data.
The only thing that might be a bit tricky to get is generating a navigation mesh (if you need it) at runtime, so characters can avoid obstacles and reach the player.
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