The arcade version uses compressed textures. Some Extra Quality releases include pre-decrypted game assets, allowing the GPU to load textures faster and preventing the "low-res pop-in" that plagues HDD-based setups.
This is the core "Extra Quality" feature that significantly improves image clarity. segatools ongeki extra quality
To achieve maximum "Extra Quality" in Ongeki via Segatools, you would edit the ongeki.ini file (usually located in the SegaTools or App folder) under the [gfx] section. The arcade version uses compressed textures
Example ongeki.ini for High-End PC (1080p/144Hz): Impact:
[gfx]
; Enable resolution scaling (Set to 1 for Extra Quality)
enableRes=1
; Run in fullscreen to apply native resolution
fullscreen=1
; Cap framerate (Match this to your monitor's refresh rate)
framerate=144
Example ongeki.ini for Standard/Low-End PC (Arcade Accurate):
[gfx]
; Disable scaling to keep arcade-accurate resolution (768p)
enableRes=0
; Windowed mode for easier access to other apps
fullscreen=0
; Standard arcade framerate
framerate=60