There can be many reasons for the slow download experience. It includes issues with the Microsoft Store app, enforced speed limiter on the application, corrupted Microsoft Store cache, Windows Updates running in the background, and so on.
Slow download speeds for Microsoft Store
We can use the following methods to increase download speeds in the Microsoft Store on Windows 10:
Speed up Microsoft Store Downloads
Make sure you have a stable internet connection to download apps and games. Also, check if an update or massive download is already in progress. If that’s the case, you should wait for it to complete.
1] Reset the Microsoft Store cache
Reset the Microsoft Store using the Windows 10 Settings App and check if that fixes your issues. Many a time, the cache itself causes problems. If you like to use the command prompt, use the wsreset command to clear Microsoft Store app cache.
2] Set the bandwidth limit for downloads
Use the WINKEY + I combo to open the Windows 10 Settings App.Navigate to Update and Security > Windows Update.On the right side panel, select the option that says Advanced options. Then select Delivery Optimization.
Under the section of Download settings, check the box for Limit how much bandwidth is used for downloading updates in the background and slide the slider to 100%.
3] Re-register the Microsoft Store app using Powershell
Open Windows Powershell with Administrator level rights. Click on Yes for the UAC or User Account Control prompt that you get. Once it is open, type in the following command to re-register the Microsoft Store app and then hit Enter. Let the process complete and then check if your issue is fixed or not. Let us know if this helped increase download speeds in the Microsoft Store on Windows 10.