When I downloaded and started using MC 29, MC 29 installed a new madvr instance under the "Media Center 29 / Plugins" folder.
Here are some quick fixes that you can try.
1. Change the Vertical sync to "ON" in the Manage 3D settings in NVIDIA control panel.
2. Also set (in madVR, under rendering - Windowed mode) present frames in advance to 1.
3. You can also try to disable (in madVR, rendering - general settings) use Direct3D 11 for presentation.
The first two solved the micro stutter for me using a 2080 graphics card.
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Additional ways to try to fix stuttering:
* madvr settings > general settings > windowed mode / exclusive mode > frames presented in advance = 1
* NVIDIA settings > Power Management Mode = Adaptive / Normal
* NVIDIA settings > Vertical Sync = Adaptive
* NVIDIA settings > GSync = Disabled globally (use profiles for games)
* NVIDIA settings > disable Multiplane Overlay
Multiplane Overlay:
https://nvidia.custhelp.com/app/answers/detail/a_id/5157