http://bugs.winehq.org/show_bug.cgi?id=16149
--- Comment #38 from Björn Tantau bugs.winehq.org@s.bjoern-tantau.de --- As a workaround install dgvoodoo 2.79.3 and set launch options to
WINEDLLOVERRIDES="d3d8.dll,d3d9.dll,d3dimm.dll,ddraw.dll=n,b" %command%
To run at higher resolutions start winecfg and increase the DPI. 160 was a good value on the Steam Deck in desktop mode with borders hidden by kwin.