Surface Book 2, i7 & 512GB. Problems again and aga...

Surface Book 2, i7 & 512GB. Problems again and again after updates. Something doesn't always work with these devices. Performance times great and then slow again for inexplicable reasons. Now since the last update, it is no longer possible to install Office 365 (reinstallation because of many problems). Not possible even after restarting Windows. Furthermore, the enterprise version was installed after the standard re-installation of Windows, although this was never installed ... How is that possible? 5 identical surfaces are used professionally and we always have problems with all of them. We are immensely disappointed .... We chose the Surface because it was developed by you and you would think that it would be most compatible with Windows products. The opposite is obviously the case and even after more than a year the problems have not been solved. On the contrary: there are always new problems. We should be able to work with the devices, which is far from being possible at the moment.