Hi Oliver, not sure that I can help you. But I have the same problem with Premier Rush on Win-10 laptop. It might be related to the graphics processor driver version that you have. The rendering uses hardware or software processing in Adobe products and there are some that you can tell them to do software rendering like in Adobe Media Encoder and others. For example I use Intel Graphics HD 620 and need to upgrade the driver some day. Possibly the Premier Rush uses only hardware rendering and that's why it happens.