Summary
Hitman and Steam keep crashing on connecting to server
I've tried a multitude of solutions for relatable problems but non of them work

THE PROBLEM
The problem started randomly: whenever I launch Hitman everything works until I need to press enter to connect to the servers. Before the key input everything works as intended: steam overlay, launch etc. After I press enter both the game and Steam freezes and I need to go to tasksmanager to shut them both down.

Previously I had no problem with launching and playing the game (+27 hours)

This also specificly happens with only Hitman as other games lauched from Steam and/or multiplayer games work normal.

PC Info
I recently upgraded my rig with the following specs:
OS: Windows 10 (legally)
CPU: i5 7600K (Non-overclocked)
RAM: 16 gb DRR4
Motherboard: Gigabyte Z270 K3
GPU: MSI Nvidia GeForce GTX 1060 6gb
Storage: 500gb SSD, 1tb HDd, 2tb HDD


FIXED ATTEMPTS
So far I've tried:
-Reinstalling the game
-Reinstalling Windows
-Putting cloud-cync off
-DX11 and DX12
-Window mode
-Potato mode
-Launching it as administrator
-Turning Steam-overlay off
-Verifying local files

Nothing of the above made any difference