Slow updates in the tf tree. How to deal with it ?

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Let say I have a node that publishes a transform from /map to /world. This transformation will be updated at a very slow rate compared to everything else.

Now if I need to call tf transformation lookup, I get "extrapolation in the future" errors. One way to deal with it, is to have the node continually pushing the latest transformation so that it gets updated more often. However, that seems more like a hack than an actual solution.

What would be the correct way to deal with such situation ?