09105: gunpey: Brief audio stutter

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
09105	Sound	Minor	Always	17 days ago	17 days ago

Tester	JimCarlTay	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Invalid report	OS	Windows 10/11 (64-bit)
Status [?]	Closed			Driver	misc/gunpey.cpp
Version	0.274	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	09105: gunpey: Brief audio stutter
Description	When loading the game, the game speed fluctuates between 98% and 99% or stays within 98% or 99% and does not stay within a consistent 100% despite my computer having a capable six-core CPU with an integrated GPU. The issue leads to brief stutters in the audio that may or may not sound distracting. It's likely that some other games, systems, and drivers (including Krull (krull; gottlieb/gottlieb.cpp) and various ddenlovr-based mahjong games with a Toshiba CPU) may have similar audio stutter issues to this game.
Steps To Reproduce	Load the game and wait until the title screen appears. If you don't hear the stutter there, stick around during the attract mode. It may vary depending on the host system running MAME, but chances are that you might be able to hear the audio stutter.
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	gunpey

Attached Files

No.22937 hap Developer 17 days ago	Compare your configuration files (mainly mame.ini) with the one from a fresh install. I think one of them causes the speed to be reduced for you for games with a higher than 60hz refresh rate, likely a deliberate setting.
No.22938 JimCarlTay Tester 17 days ago edited on: 17 days ago	Disabling "Wait Vertical Sync" in the video options fixes this for me.
No.22940 hap Developer 17 days ago edited on: 17 days ago	MAME's frameskipping algorithm kind of sucks, but you'll need to enable autoframeskip if you want to enable waitvsync for games that have a higher refresh rate than your screen.