Thanks for sharing this apk. At first I installed it on my Samsung S10+ with Android 11 and SD card inserted. Downloading the maps and starting the app was very, very slow.
Then I removed the app, shut down my phone, removed the SD card, installed the app and downloaded the maps. Shut down my phone again, inserted the SD card en then the app started very fast. Downloading extra maps is also much faster. This is an issue of Android 11 and navigation maps on SD card.