Add d2d1.dll with winecfg
Mapped back butttons L4 and R4 to mouse keys
40hz refresh rate
This fix also applys for Dead End Aegis and Sadistic Blood! While Gaiden might warn you that it is not able to play videos you can ignore that. There is no Opening in Gaiden. In order to get the Opening runnng in the Main Game you'll need Lav Filters, you can also just install it for Gaidan to get rid of the message on startup, Gaiden does also run with normal Proton. More can be found here: https://forums.fuwanovel.net/topic/25280-visual-novels-on-steam-deck/
winetricks to install lavfilters
I followed a guide from this page: https://forums.fuwanovel.net/topic/25280-visual-novels-on-steam-deck/?do=findComment&comment=533660
You need to use lutris, install lavfilters with winetricks, use a 64bit wine prefix and add d2d1 with winecfg in order to fix the font problems
winetricks -q ffdshow quartz wmp10 d3dx9 dotnet35 vcrun2003 vcrun2005 vcrun2008 vcrun2010 vcrun2012 vcrun2013 vcrun2015
Font size is big that overflows the game window. I found a temp fix. There is a file called printmessage.xtx
inside of init
folder of the game where you can set up the font spacing and font size
init>printmessage.xtx
Here are my settings, the font is still smaller but at least it does not overflow the window game, the text on the backlog is still big.
fontSize 14
printX 0
printY 580
nextX 0
nextY 20
Videos does not work, at least there is a prompt on startup to skip the video intro
You can try lowering the font size as temp fix but it is too tiny to read comfortable
Font is too big and spaced out, can't read like this
Text font is too big for dialog, and has too much spacing between text.
Font goes beyond the message dialog, cant read the text
Font too big, text goes beyond the message dialog