Rage3D have updated their tweak tool again. Here's what they're saying:

It's finally out, and has a host of updates. New hotkeys for app/game priority setting, new display tweaks for window management, additional tweaks useful to multi-monitor configurations and more. The translations are starting to come in, with Italian being the first I've gotten back. I'll be compiling the multi-language install over the next week as they I receive them. Download Rage3D Tweak v3.5