I'll try to fix it for you ASAP :)
btw, you can still load BetterFps using Forge/LiteLoader
Sorry for taking too long to answer
Can you try using the new launcher to see if it works?
It might be an issue with the old launcher
The first two letters?
It doesn't "remove" FPS drops, it just helps to not have to drop frames every letter you put in the search bar. I'm thinking about making it multithreaded, it will still take a bit to load, but it will not drop frames.
Can you send me a screenshot of the version list in the launcher and the version list in the BetterFps installer?
I haven't fixed the benchmark bug yet, the installer looks for versions starting with "1.11.2", if you are using OptiFine in 1.11, it will not work.
As explained in the FAQ, no.
In the game, there is an options screen for BetterFps. It's in Options -> BetterFps Options
It should, not only create a new version, but set the current profile to the BetterFps one.
Are you using the new official launcher or the old one?
Yep. This is just a bug with the algorithm benchmark.
The number is so big that it overflowed, haha
It will be fixed in the next version :)