As it has been reported by a number of users, the performance of re-drawing of many Codejock controls as well as the performance of application startup has decreased significantly in some cases on Windows 10 after installing Fall Creators Update.
The issue has been investigated and the workaround was found. However as the root cause of the issue is deep in Windows API affected by the update, it cannot be fixed in Codejock components.
The only way this issue can be fixed until it is officially fixed by Microsoft is to disable Bitmap Smoothing in Magnifier settings. This applies regardless whether you use Magnifier or not by default: