RPGM projects gots corrupted

[kako05]

Copying the original, pasting it, and opening the copied projects through the editor will corrupt both projects database.
You'll notice it takes longer to load the database with editor and crashes happens often. 1/10 opening database, opening events etc. it crashes. (have like 500hrs with degica version, zero crash before that happens)

Doing so corrupts "Data/System.json", because replacing it with the older backup file fixes the slowdowns and crashes BUT! Once I did it, open and tested my current project that the problem is fixed, I tried to replace the "good" System.json with the supposed "bad" System.json again and no slowdowns or crashes occurred.
It happens on both, steam version and degica (I brought degica in hopes it's just a steam version doing so).

Please fix it. This "weird" bug potentially ruins projects and thousands of hours put into them. It's very hard to develop once it happens, though the "weird" fix is pretty easy.

The biggest problem is crashes.

 

[ArielSystem]

What RPG Maker MV version do you use?

 

[kako05]

What RPG Maker Type and What version do you use?

RPGM MV 1.6.2
I've made a video, just don't want to share publicly because there's some personal information. I have no problem PM the link. Basically, it shows when I copy>paste the project and run the copy, both original and copy corrupts. Replacing Data/System.json with the older file (before copying) fix the issue and then I compare "fixed" version with the "corrupted", same map etc. Database loads on fixed almost instantly corrupted take ~2-3 sec. Not shown, but from my experience, crashes could happen every 5 min or 30min if it's corrupted (the database load time is a good indicator when it happens).
Nvm, I'll send you a video.

Also, this is the error I got loading the corrupted project.
http://prntscr.com/nalhfa
Could this be related to Qsomething crashing and RPGM editor audio not working (but you can do other things just fine, only audio doesn't play).

 

[ArielSystem]

Make another fresh Project, and copy all your project (exept the files).

If this doesn't help, try System Restore to get back the old project that your corrupted it.

 

[kako05]

It's fine, I made a system which automatically makes 3 backups a day since the last time it corrupted my project and I had to redo everything wasting 3 days of work. I just hope this problem can be addressed and fixed. Not sure why it happens. Is it just me? But I've tested this on two different systems...