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Applies for BTC:USD as well.
Works well at the 15min timeframe. However, the performance is not as good as 3 hrly since price movement can be more "random", doesn't necessarily adhere to TA well, and difficult to predict.
Typically need a different trading strategy to trade at such short timeframes IMO.
At such low time frames, looking at the underlying/hidden momentum/acceleration/hidden momentum shift, etc. (i.e. PRISM Signals and PRISM Oscillators) tends to be more effective rather than relying on traditional TA/patterns that works better at longer timeframes where randomness/noise are averaged out.
Works well on the 1D chart as well, especially for the more mature and less volatile markets, where price moves slower.