ADOBE RUSH- SYNC and OTHER ISSUES

Hi All

I have a Windows laptop with good specs.

I have found that Rush videos lose sync when you render them.

My videos range from 10 to 30 minutes.

I use several sources for audio - mostly mp3.

My video is the issue and comes form Gopro or my phone.

It looks perfect when editing but then the vdieo is out of sync.

I have tried a few things to fix it - reinstalling and just putting it back through rush and fixing.

The other issues is that when I updated to the latest verion, all fo my downloaded titles, transitions etc dissapeared. These have been taken from youtube 'how to' videos and other places.

I simply went back to the previous version.

Thanks for your help!