Beatgrids in 7.0.2 are off vs same database in 6.8.5

There seems to be something catastrophic going on in 7.0.2 in terms of loading existing beatgrids/waveforms.

I have a few thousand tracks that I have manually gridded with Mcue and Hcues.

I open 7.0.2 and the grids are all slightly off, with lots of fluctuation in their accuracy across the songs. I'm talking sometimes less than a beat behind, to the within the same song being over a half beat ahead of the beat.

But then boot up 6.8.5 and everything is perfectly fine, just how they're suppose to be, every grid in on beat with zero fluctuation across the songs.

So it's impossible to say for sure what's happening, is the beatgrid data fine and it's the waveforms time data that's wrong? or vice verse? Can't say for sure.

I'll check in every month or so, but I'll be keeping 6.8.5 as my main till 7 can prove it's something I can rely on. This is un-usable atm.