UE4 editor crashes and freezes my pc! have to submit project in a month

Here is the crash report from [Windows Error Reporting]

29-04-2019 14:50 Application Error Faulting application name: UE4Editor.exe, version: 4.20.3.0, time stamp: 0x5b9fd930 Faulting module name: UE4Editor-Core.dll, version: 4.20.3.0, time stamp: 0x5b9fd618 Exception code: 0xc0000005 Fault offset: 0x00000000004f3489 Faulting process id: 0xd4 Faulting application start time: 0x01d4fe921ddf8b86 Faulting application path: C:\Program Files\Epic Games\UE_4.20\Engine\Binaries\Win64\UE4Editor.exe Faulting module path: C:\Program Files\Epic Games\UE_4.20\Engine\Binaries\Win64\UE4Editor-Core.dll Report Id: 67950575-e34c-4b37-a18d-87a21e2f4382 Faulting package full name: Faulting package-relative application ID:

System Specs:
Processor- AMD FX™-9590 Eight-Core Processor, 4700 Mhz, 4 Core(s), 8 Logical Processor(s)
RAM- 16GB
GPU- MSI 1080ti

i have a month to submit my project please help. Till then will go back to an older version of UE4

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://epicsupport.force.com/unrealengine/s/

Thanks