Very Slow on Adobe Rush!

Hi,

I am trying to edit 10-15 min videos using Adobe Rush. When I first started using it a few months ago I had no issues with jumpy videos, audio, in fact the video and audio now rarely pplay at the same time. Loading any titles, transitions etc takes an age and any task that was previously taking 1 min is now taking 30 mins. Needless to say, pretty frustrating! 

I am using an Acer Desktop-Q0PVGPI, Processor i5, 6GB RAM. The frame size is 1080/16:9.

Any advice on how to resolve this would be greatly appreciated!

Kind regards

Luke Schembri