Suggested fix (unconfirmed): Update or revert problematic Windows updates, especially if you are using a 14th-generation Intel processor. Ensure all your hardware drivers and Windows 11 are fully up to date.
Suggested fix (unconfirmed): Verify the integrity of the game files through Steam. If the game still fails to start, check the game folder for log.txt and traceback.txt files and send them to the developer.
Suggested fix (unconfirmed): Walk Rika outside wearing the dog collar with four stops for poses, skip the minigame, and then trigger the scene in front of the choir the following afternoon while bringing her to climax.
My guess is that Steam might be screwing with your resolution. Try the following, since what I gave before was essentially the nuclear option that I used myself and only resets the game, but not Steam (especially if you've changed the resolution via Steam before): 1.
Suggested fix (unconfirmed): Aim for 100 successful slaps instead of 99, as the counter and achievement requirement can be unforgiving. Ensure all slaps are completed before the countdown ends.
Suggested fix (unconfirmed): Cap your frame rate to 60 or 144 FPS. Alternatively, vacuum the floating item by standing on the side of the bed and adjusting your camera angle.
No confirmed fix yet. Players suggest: As I wrote, I did the minigames (drinking game, truth or dare, and the bannana game), but the game was glitched so I couldn't start the poledance or the pank event, eveything else worked as intended.
Suggested fix (unconfirmed): Load an older working save instead of your latest one, as code updates can break incompatible save files. If the issue persists, delete the save folders in both your game directory and your AppData Roaming folder so Ren'Py can recreate them.
No confirmed fix yet. Players suggest: We're only providing feedback from what's available, there are some issues that are not resolved yet, in particular some that are related to players using older OS, when I have more information I will update.
Suggested fix (unconfirmed): Write `-force-d3d11` in the game's launch options, or disable Deep Guard in your F-Secure antivirus settings if you receive an application load error.
Suggested fix (unconfirmed): Add the steam run command `--safe-mode` to change the rendering API, or disconnect your controllers like the Thrustmaster TWCS throttle.