Second time this has happened, I got lag so I tried to change a video setting, after changing (lowering shadow quality) it goes to a loading screen and then just won't ever load again. After 10-15 minutes it crashes and sends a report. After a restart of the launcher and game twice it still won't load. Takes my log in but stops at the loading screen. I tried repair tool. Is it maybe a corrupted settings file from crashing in the midst of a change? Is there a file like a data cache file that one should try deleting? If so what, where?

Fairly new to the game but this sequence happened a little while after I first installed, it cleared up eventually but I am not sure how or why. I did not get to rebooting of my whole computer but I am not sure what difference that could/should make. Today I have exhausted all the time I had for "relaxing" trying to fix this.