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Bug 5104

Summary: Timer resolution should not be set to 1ms on default.
Product: SDL Reporter: Joel Linn <jl>
Component: *don't know*Assignee: Ryan C. Gordon <icculus>
Status: NEW --- QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: rick
Version: 2.0.12   
Hardware: x86_64   
OS: Windows 10   

Description Joel Linn 2020-04-22 22:16:03 UTC 
SDL_Init() initializes Ticks which sets the windows timer resolution to 1ms at default. timeBeginPeriod() is used for this. We call NtSetTimerResolution() before to set the resolution to a lower value and SDL overwrites this at default, which costs us decreased frame-rates. This behaviour can be turned off setting a Hint before calling SDL_Init() of course.

However, in SDL_hints.h it is elaborated that setting the timer resolution is a bad idea in many cases as well as:
> This hint is only used on Windows 7 and earlier.
From that I deduce timeBeginPreiod() should never be called on Windows 8 upwards, hence a bug report.