It is true that there are some applications or tools for Mac that are still not compatible or have directly lost compatibility after the update, but in most cases there are no complaints about incompatibility or performance problems.
This is basically due to the few changes between the macOS Sierra version and the macOS High Sierra version. But with it We do not mean that there are not some tools or applications that show incompatibility, yes, they are less than in previous years.
When we update the operating system of a Mac to a completely new version it is usual that developers are already prepared to release their updated versions to the system, but sometimes some applications are not up to date and it can be a problem for the user. That is why whenever we need to work with specific applications, it is important to consult with the developer himself or to search the net if the application is fully compatible with the new version before launching the update.
For now, the plugins of some applications have failed in this new version of macOS High Sierra, according to some users, but these are ultimately minor damages. In this sense, the important thing is to be clear that the applications we use for our work, leisure or similar are compatible with the new version of the OS that we have to install. Do not remember what it is very important to have the latest version installed on our Mac, and leave out those applications that do not receive updates for the OS.