Guild Wars 2

I had this issue, or a similar one, too. Using a GTX 1080 with Windows 10 the game was so dark, the new map was nearly unplayable:
Draconis Mons – Dark

After lowering the shadow settings from Ultra to High, everything brightened up and looked much better:
Draconis Mons – Normal

Here’s the comparison on imgur

Posting for a friend. The account has been stolen nearly two weeks ago

Relevant data:
ID: AdvDiaboli.3492
Ticket: 120828-001455

All necessary data should be in that ticket.