How can I synchronize event frames and rgb frames?

[DenisDiachkov]

I am trying to record frames from UnrealCV scene(https://github.com/uzh-rpg/rpg_esim/wiki/Photorealistic-Rendering-Engine-based-on-Unreal-Engine)

The problem is event frames are more than rgb frames. And it's getting worse with resolution increasing. How can I tell to simulator to synchronize the frames?

I tried reduce --rate flag in rosbag play commad. It worked for really low resolution. But it doesnt work at all for high resolution frames.