Groove agent


I recently upgraded to Cubase 9 Elements. only problem I have is every time I m working with Groove agent Cubase is not responding. the time it takes for the software to freeze is random. I noticed that it freezes mostly when changing presets, but not all time. Sometimes Cubase is not responding while playing beats on the same preset.

my computer details:
Intel Core I7 2600
GTX 970 + GTX 660ti
16GB ram DDR 3
transcend SSD 512GB (Cubase installed on this hard drive)
Western Digital 1TB 7200 RPM caviar black.

please advise,
Thank you very much