What GPU do you have? As a first try you can do the following:
1. Download this config file:
https://drive.google.com/open?id=1g86ijgDQGVqScKkH0n_G6XUl5_xvcH5t
2. Copy it into %appdata%\SepiaRain\TidalTribe\config
Maybe that works. (if it does: it's gonna look like shit but you can try changing the settings again and see what's causing the problems. In one instance it was the anti-aliasing, so you can try leaving that disabled)