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Rakashazi / emu-ex-plus-alpha

Multi-platform computer & game console emulation system including supporting code (EmuFramework) and core engine (Imagine)
GNU General Public License v3.0
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[Issue]: Trying to run content at 40fps (80, 1/2) #1639

Closed 382kB closed 2 weeks ago

382kB commented 2 weeks ago

Describe the bug

I'm trying to set frame rate to 40fps for performance reasons (and because I prefer it that way).

I set the Custom Rate to 80fps and set the Target Frame Rate to 1/2 with the intention of reaching 40fps but strangely my game runs at 80fps (as if it were a fast-forward, internally)

The device I tested on is the Xiaomi Redmi 9 (refresh rate is 60Hz, ~59Hz)

Steps to reproduce

  1. set the frame rate target to 1/2
  2. set the frame rate to 80
  3. start the game

Expected behavior

What was expected is that the content would be at 40fps and not at 80fps

Relevant log output

No response

Add screenshots

Screenshot_2024-05-01-16-21-59-129_com explusalpha Snes9xPlus

382kB commented 2 weeks ago

https://github.com/Rakashazi/emu-ex-plus-alpha/assets/168353325/4a9d479d-35a4-42da-bce8-a66f29fc977c

Rakashazi commented 2 weeks ago

Hi, this is the expected behavior. Running at 80Hz will inherently speed up the emulation and setting the frame rate target to half will drop every other frame without affecting the speed.