HI, thanks for the answer.
It all started after not using ue4 for a while. I thought it was a driver issue but I have updated everything, UE4 has been removed and re installed again as well. Somehow the problem is fixed for a couple of hours only when I re-install the program. I don’t think it is a spec issue as my laptop is quite new: MSI Leopard 16gb ram, Gtx 1060 gddr5… Do let me know if you find the solution, I’ll try installing windows all over again…
Cheers