not the brick size, keeping the brick size constant if you change the chart time frame, then the plot also changes just with different time frames. that is why renko should be use only on tick data of 1 tick otherwise if chart is set in timeframe mode then the renko can plot only as per the timeframe set, that is even if the price changes by lets say 4 bricks within the 2 minutes as set by you, then those 4 bricks will paint only at the end of that two minutes