Hello everyone,

I hope you're all doing well!

I'll get straight to the point: I'm experiencing the exact same problems as Lazy Bird, and I can't find a solution!

I'll explain because I really need help, otherwise... I don't know what to do.

I'll try to be precise.

I've been using BIAB since version 2022 on a powerful PC specifically configured for music production (unnecessary background services disabled, processes x and y closed, etc.). I'm a former IT professional, and without being pretentious, I think I know how to configure a PC.

My configuration:
PC i9 12900H - 32 GB DDR5 RAM - Extremely fast NVMe 4 SSD.
Windows 11 Pro 25H2 (this information might be relevant).

The PC is configured on a high-performance power plan set up using ThrottleStop software (basically, the machine is set to its maximum capacity). Numerous other settings are also configured (USB power off, etc.).
My equipment also includes a Roland Integra 7 expander, a Presonus 68C audio interface, and in addition to BIAB (versions 22, 23, 24, and currently version 2025), I use Cubase Pro 14, Synthesizer V, Studio Pro II, JazzLab, Spectra Layers, etc.

As for the keyboard, until recently I used a Yamaha P250 (a very old stage keyboard, I should mention, as I think this is relevant). This keyboard reached the end of its life, and I invested in, guess what... a Yamaha Clavinova CLP-835 piano (follow my gaze... it's superior to Lazy Bird's Yamaha piano, but it uses the same drivers (Yamaha Steinberg) and sends roughly the same MIDI data, which is quite large, I'll come back to that later (due to the Master Keyboard mode it has implemented, which considerably reduces the MIDI data).

Until this keyboard (the CLP-835), I was using the Yamaha P250 as my master keyboard.

To give you an idea of ​​what I was doing without ever experiencing the slightest slowdown, crash, or anything like that, with this setup, I could simultaneously open Cubase, BIAB, Synthesizer V, etc.), run all of that with ASIO sharing in multi-client mode without any problems, plus VST plugins like iZotope, various virtual instruments, etc. I mean, without any slowdowns or crashes. A real beast of a setup.

And to be clear, I could use BIAB as a standard application or as an add-in without any problems.

But here's the thing: what I used to do, I can no longer do. For the simple reason that BIAB now slows down when I use the Yamaha 835 CLP while playing over an arrangement. And that's the only reason it crashes (or at least slows down, because enabling ASIO sharing prevents the program from crashing, but the random slowdowns persist)! As soon as I'm not playing via MIDI with this keyboard, everything works. If I don't open the MIDI input port on this keyboard, everything works.

I've done a lot of research. I've tried every possible setting, even limiting the Yamaha's MIDI messages as much as possible (for example, keeping only Note On and Off, nothing else [the 835 CLP doesn't have a Master Keyboard only mode]). Nothing works! As soon as I play MIDI using the keyboard's MIDI input in BIAB, the software experiences random slowdowns, and not always at the same time.

I can't take it anymore! :-)

So the question is simple: why did I have no problems with the Yamaha P250? Why do I have these problems with the CLP (which, coincidentally, is very similar to the Lazy Bird piano)?

What's more, folks, the CLP 835 works like a charm with Cubase! And what's more, with RealBand, it works like a charm! In both cases, no slowdowns, no crashes, nothing.

So what's the problem? From my limited experience, I have the following feeling: there's something wrong with BIAB's MIDI handling. Something that, even worse, doesn't exist in RealBand.

Could there be a problem with chord recognition? Something related to this function (which I don't think can be disabled, at least I haven't found a way) is causing Biab to suddenly become "overloaded," something like that. Its internal engine (to put it that way) seems overwhelmed. It's not the PC that's slowing it down or causing the problem, as I've already explained. And as I said, the keyboard works perfectly with Cubase and RealBand without any MIDI event filtering!

The reason I'm talking about chord recognition is that, unless I'm mistaken, it's the only thing that distinguishes Biab (regarding MIDI input) from RealBand, right?

Then, of course, why did it work perfectly with the P250 and not with the CLP 835???

HELP HELP!!! :-)

Thanks everyone.

Music for pleasure