I had problems in splitscreen multiplayer. I had to edit "splitscreen_config.txt" file in "steamapps\common\Portal 2\portal2" folder.
I changed aspect in config (bold text) that worked best with LG 34UM88 21:9:
"widescreen_horizontal_split"
{
// twice as wide as 16x9
"aspect" "128 by 27 ...
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- 13 Apr 2019, 10:04
- Forum: Detailed Widescreen Reports
- Topic: Portal 2
- Replies: 5
- Views: 13490