Despite the fact that I had tested a number of whistles, including the one that was sewed into the motherboard, I was still required to purchase from Microsoft. Do not try to save money by purchasing something from Microsoft or a whistle that costs between 400 and 1000 dollars; instead, spend the money on something that is of higher quality. When the controller runs out of power, your frame rate drops to 10 frames in games. Despite the fact that the processor and visual card will not even be 1/3 loaded, all of these drawdowns are because of bt whistles. This is especially true when the controller runs out of power. Even when the gamepad is fully charged, the frame rate is still a little jerky. I measured it with the assistance of special tools using the typical whistle and from MS. In general, make your own choice; the miserly one is aware of the amount that he contributes. In my view, it is preferable to make a one-time payment and make do with fewer washes of the hair than to endure continual discomfort. Purchasing is something that I wholeheartedly encourage doing. If you do not understand what I wrote (about the drop in fps and lags), then google "frame drop bt reddit" or "frame drop xbox gamepad bt." This weird bug with a drop in fps and lags is discussed in the video "Xbox Controller is Robbing Your FPS | How To Fix." Those who do not understand what I wrote about the drop in fps and lags should watch the movie.