UE4 Keeps crashing please help

Hi, whenever I try to use UE4 it works smoothly for a few seconds then starts lagging a lot and eventually crashes even though I am in a blank project.
Here is the event log for the crash.

Faulting application name: UE4Editor.exe, version: 4.19.0.0, time stamp: 0x5aa895e3
Faulting module name: d3d11.dll, version: 10.0.16299.248, time stamp: 0x91f7d981
Exception code: 0xc0000005
Fault offset: 0x00000000000b9d6f
Faulting process id: 0x34d8
Faulting application start time: 0x01d3c9c5f0257f46
Faulting application path: F:\Unreal Engine\UE_4.19\Engine\Binaries\Win64\UE4Editor.exe
Faulting module path: C:\WINDOWS\SYSTEM32\d3d11.dll
Report Id: 782bf95d-68c6-4a79-ad45-f5501e2c8405
Faulting package full name: 
Faulting package-relative application ID: 

Any help would be appreciated.
Thanks