This guide will cover acquiring Rivatuner and how to use it for the purpose of toggling your in game's FPS to locked values. Here's a link to a photo album I made with screenshots instead of this text guide https://photos.app.goo.gl/NUASsss29gm5kdGTA Click the first photo and then use the arrows on the UI to navigate.
Rivatuner also gives you a description of what each option does if you hover your mouse over it for a few seconds.
First, go and download https://www.guru3d.com/files-details/msi-afterburner-beta-download.html This should be the current version of MSI Afterburner, if the link breaks just check the downloads section of guru3d.com.
Extract files and install, during installation it'll ask which packages you'd like installed, make sure Rivatuner is checked and finish install.
Open Rivatuner (Rivatuner Statistics Server) and it should open up in your taskbar, click the taskbar icon to open up the UI.
In the bottom left of Rivatuner, click the Add button and locate CorpseParty_BloodDrive.exe. If you're having trouble finding the file location, from steam you can right click the game in your steam library -> manage -> browse local files.
After you add Blood Drive, it'll show up in your Application Profiles List which is located above the Add button on the left side of the screen. Click this once so it's highlighted, now we can apply the settings on the right towards just this game.
In the Framerate limit section, either type in this field and hit enter or click the up/down arrows to modify what you want the FPS to be. In our case for Blood Drive we're using 10 for the currently known skips, but feel free to mess around with different values in other areas as no one has really dived too deep on finding new clips.
We want to show our FPS in game so we can see if someone is using FPS toggling, so make sure On-Screen Display support is on and Show own Statistics is on, you can edit where it appears on screen or it's size with the zoom function and arrows at the bottom right.
Lastly we're going to set our hotkey for enabling/disabling framerate limit. In the bottom left, click the Setup button. A new window should open, click the Plugins tab at the top and then double click HotkeyHandler.dll. Under the Framerate limiter section, set your hotkey for Toggle Framerate limiter by clicking in the white box to the right of it and inputting which key you want; I use numpad 0.
Click OK at the bottom and then click the checkmark next to HotkeyHandler.dll to enable hotkeys and click OK at the bottom again. That's it, when you're in game you should be able to hit that one hotkey once to go to your current Framerate limit value, then again to disable it.
If you're capturing the game with OBS, in order to show the FPS on screen in the recording you need to right click properties on the game capture and enable Capture 3rd Party Overlays (such as steam)