RSDKv5 + v5U forcibly sets display refresh rate to 60hz when entering fullscreen

[SammyGoesHowdy]

Before opening this issue, I ensure that...

• [X] I have read the FAQ and confirmed my issue is not mentioned in it.
• [X] I have checked both open and closed issues and confirmed this bug has not already been reported.
• [X] I am not asking for tech support (e.g. game closing on startup, error when trying to build, etc).
• [X] I am not asking for modding support or reporting a bug in a specific mod; this bug either occurs without mods enabled or is directly related to the mod loader.
• [X] This bug is not related to any unofficial fork/port of the decompilation, and any issues with those should be kept in the appropriate repository.

Expected Behavior

My displays refresh rate isn't meant to be changed when entering fullscreen like I would expect with Sonic Mania on Steam.

Actual Behavior

My displays refresh rate gets changed when entering fullscreen

Steps to Reproduce

1. Buy a monitor thats supports refresh rates above 60HZ and set your refresh rate in Windows accordingly
2. Start up Sonic Mania on either the RSDKv5 or V5U decomp (Tested with Sonic Mania Plus and Sonic 1 (Origins))
3. Enter fullscreen, you should see your refresh change to 60Hz

Screenshots

No response

Log File

log.txt

Decompilation Version

Release build 1.1.0: The SHC2024 Update

Engine Revision

REV0U (RSDKv5U)

Backend

DirectX 9

Platform

Windows

Additional Comments

No response

[SammyGoesHowdy]

UPDATE: This happens with Sonic 1 (Origins)