Playback stuttering
I have a long standing project so running PP 2018 with Dynamic Link to AE 2018. Although there are a lot of layers on AE it plays back OK in AE on 1/4 resolution. However PP playback stutters even on 1/4 resolution. When I looked at the Project Settings/General/VideoRendering and Playback to see if I could improve matters I saw that the Renderer: was greyed out. Why would this be? Is this a hardware problem? I am no techy so any help would be appreciated. Thanks - John.