Bitwig tries to detect the tempo of whatever audio you drag into it, and the default detection range is 80-160bpm - that's why 200bpm stuff is playing at double speed, it's being detected as 100bpm.

There are two ways around it - you can either manually set the tempo for each clip by right clicking each clip then selecting Tempo > Set Event Tempo, or you can Acidize the renders by opening the plugin Preferences > Rendering, then enable Acidize Renders. Acidizing embeds tempo and pitch information into each clip, which adds a little time to each render.

I found that acidizing worked every time, however if for some reason it doesn't work then manually setting tempo for each clip will work 100%.

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