Lightroom keep freezing/crashing and not saving

Hey there,

Today I write these lines because I'm exhausted. Since few weeks Lightroom keeps crashing without any visible reason. Sometimes it's fine for few hours, and sometimes it crashes if I try to do anything.

No error log, just freezing instantly without any lag before, and freezing for unlimited time means that I have to shut it down resulting in loosing ALL the things I've done since I opened it. My graphic card isn't stressed before freezing or something like that, sometimes it freezes only when I try to crop, moving a slider, or just opening a picture.

It's extremely frustrating. It seems thats turning off GPU acceleration fixes it, but using LR without it is a nightmare.
I tried everything, uninstalling updates, changing photo viewer, changing hard drive, and upgrading graphic drivers... Nothing solves it.

What can I do ? I've read everything about it online but can only found basic ideas. I also tried to use a previous version of LR : same result.

I'm lost, so is all my work of today...

Details :

- i'm using the last version of LR, but issue is the same with previous ones

- W10, updated, but also tried without last updates

- how to reproduce : just use this software and try to do something and pray

- expected result : a working software, current result : random crashes resulting in the loss of all my work

- hardware : nvidia geforce1070