03062: -throttle forgotten with high -frameskip

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
03062	Core	Major	Always	Mar 22, 2009, 17:18	Nov 26, 2017, 00:54

Tester	AndersH	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Open	OS
Status [?]	Confirmed			Driver
Version	0.130	Fixed in Version		Build
		Fixed in Git Commit		Github Pull Request #

Summary	03062: -throttle forgotten with high -frameskip
Description	Use the -throttle option (default), press F11 to display performance ratio, select frameskip with F8/F9 keys, some games run at well above 100% (unthrottled?) at high frameskips. I checked only 3 examples: - 1943: always limited to 100%, OK - invaders: limited to 100% at frameskip 0-9, too fast at frameskip 10 - tapper: limited to 100% at frameskip 0-8, too fast at frameskip 9-10
Steps To Reproduce	The description is clear on this
Additional Information
Github Commit

Flags
Regression Version	0.113u2
Affected Sets / Systems

Attached Files

No.04031 Tafoid Administrator Mar 22, 2009, 22:44	Using TAPPER as an example, I was able to reproduce this behavior. As soon as I hit 9, the emulation acts as if it's unthrottled.
No.04048 Fujix Administrator Mar 23, 2009, 12:24	Yes, I confirmed this! Great.
No.04067 Tafoid Administrator Mar 25, 2009, 16:37	Went back and found a regression version: 0.113u2 Not too sure on the cause.. The only tidbit I see in the whatsnew that might directly effect this game: Changed throttling behavior to only throttle on non-skipped frames. This should give a little better performance on games where frameskipping is necessary. [Aaron Giles]
No.12559 Osso Moderator Apr 27, 2016, 11:21	This seems related to the screen refresh rate. Games with 30 will always will go unthrottled with frameskip 9 and 10, games with 60 won't go unthrottled.
No.14465 Kale Developer Nov 26, 2017, 00:54	Anything that runs at < 60 Hz will sport this bug. So Street Fighter 2 (59.63) yes, Devastators (60) no