Promidi

You can. I have imported kbn files many times.

You mean to tell me that have never actually delved into the sonic playground that is Falcon.....?

Maybe run your disks through CrystalDisk info as well. The Windows Event Viewer might yield something as well.

On mine it states ALT+SHIFT+L is bound to “Lock/Unlock the Screenset from modifications” I must have done it during a brief windows when it was possible to do so (in the CbB days).

As above. I actually do have ALT+SHIFT+L bound to Screenset Lock/Unlock in Sonar 2025 and Splat (and it does work). However, I have no idea how I was able to configure this, as this option is not present in Preferences - Customisation - Keybindings (advanced). It is also not listed as one of the default keybindings. I have a feeling its in the Bindings entry in the Sonar registry somewhere.

I looked into this further and I think this was added from a time when Screensets were introduced. I also looked for ALT+SHIFT+L in the keybinding settings on my Sonar and Splat and could not find it either. I am also baffled as to why I have it in my Sonar 2025 (and Platinum). However, to toggle the lock status of my current screenset, all I have to do is ALT+SHIFT+L Maybe drop a note to Sonar Support. https://help.cakewalk.com/hc/en-us/requests/new

I just use ALT+SHIFT+L. No Auto Hotkey needed. Is that not available there in your Sonar?.

Depends.

30 minutes? That does sound like a PC issue rather than a Sonar issue.... Other than that, you need to give use more information.... Like which VSTs and architecture (32bit or 64bit)? Personally I would ditch Norton and use something else.... or even just leave the job to Windows Defender. (with exceptions configured for Sonar, project and content folders)

Yes, that is actually quite high. Even if it was 90°C while the Sonar project is running, I would expect it to have cooled down a bit by the time you’ve rebooted your PC, entered the BIOS and then got to the part where you can see the CPU temperature. I have had mine up to 95°C (measured in from inside Windows OS) while doing a Music rebalance with RX11. As soon as this completes, the CPU temperature rapidly drops to around 35°C (which is my average normal idle temp) Speaking of idle temp, what is yours?

What is the specific temperature of your CPU while your project is glitching?

RPN and NRPN events are special MIDI events that some synths use to change various specific parameters to those synths. For instance with Roland GM and Yamaha XG synths and TT-S 1, RPN 0 changes pitch bend range. However, with some modern VSTi plugins, these events can stop them from sounding.

Have you tried having a look with Latencymon? https://www.resplendence.com/latencymon

Microsoft just released the September updates for Windows last Tuesday (9th September US time). Strictly as a test, try uninstalling these to see if this is the culprit.

Check for any RPN and NRPN events in your MIDI track. These will stop SI instruments sounding when encountered. You could also check the VST Plug-in Properties and tick the option “Do not intercept NRPNs”.