Yes, since 5.0r5. Steinberg can not control the behavior of all the other components that use DirectX. That means that you have to be sure that the manufacturer of your soundcard has a driver that is tested and compatible with DirectX8a. This very important - just installing DirectX8 and then starting Cubase could crash your machine if the driver for the sound card is not DirectX8 capable. Check first - because removing DirectX8 is not a simple matter.

The second issue with DirectX8 is plug-ins. Our tests have shown that a number of DirectX plug-ins are themselves not compatible with DirectX8. In this case as Cubase tries to open them during startup, the plug-in crashes and Cubase reports a 'serious error'. We have found this with a number of older plug-ins. We strongly recommend that you check with the manufacturer of your DirectX plug-in that they are indeed compatible with DirectX8 before you install DirectX8