08301: mario / Mario Bros. (all versions): (portaudio + WDM-KS only) Drastic slowdown during title screen and intro sequence

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
08301	Sound	Minor	Always	Apr 24, 2022, 14:20	May 17, 2022, 02:01

Tester	n1ghttrap	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS	Windows 10/11 (64-bit)
Status [?]	Acknowledged			Driver	nintendo/mario.cpp
Version	0.242	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	08301: mario / Mario Bros. (all versions): (portaudio + WDM-KS only) Drastic slowdown during title screen and intro sequence
Description	Using these settings in the ini: pa_api "Windows WDM-KS" pa_device none pa_latency 0.001 Zen 3 / 5800X, slows down to 70% in the title screen, but capable of 1000%+ in game. Happens in 241 as well, not sure how far back it goes just yet. I get full speed easily with other APIs. I do notice that if I loosen the latency or use WASAPI, unthrottled speed will be 500% in the title screen, but still slower than the 1000% I see with xaudio or dsound. It's apparent that something this driver does suboptimally feeds portaudio. Other games aren't bound by portaudio, or at least not noticeably so.
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	mario / Mario Bros. (all versions)

Attached Files

No.20092 Tafoid Administrator Apr 25, 2022, 11:58	Sadly I lack portaudio in my Windows install. if I had to guess, since it is only happening in certain part is that netlist audio may be slowing things down in your instance. Can anyone in Windows or not using portaudio confirm these observations?
No.20195 Tafoid Administrator May 17, 2022, 02:01	I'm acknowledging for the time being. Hopefully this can be checked properly by someone with the proper drivers/hardware.