My Edge has v. 21.18. I've noticed that after an hour or so it sort of freezes whenever pressing stop/pause and play. E.g. when you have to stop at a street light or you're having a break. It takes ages to compute stop/pause command. You may be several hundreds meters away from you past stop point when play is actually activated.
Today I even managed it totally frozen around 3h and after 70km. The screen went gray, nothing happened by pressing buttons but I managed to restart Edge but pressing upper left button like for 15 sec. Before that I was navigating.