Are you using the SWM - Mouse mod?
It had to be updated because it overwrote the trigger for the speedup; should be fixed now though.
Also, I kind of forgot to reply to your question about the level limiter, sorry... SWM doesn't have it, but @Aironfaar's Additional Options mod does.
It hasn't been updated to E18, so please use it with care and, if you find any bugs/crashes, before reporting them try if removing every mod solves them.
If you decide to install it, remember to ignore its Scripts.rxdata file: Reborn Episode 18 already includes its functions, and for this reason it doesn't need to be replaced.