Good Job…
May be helpful or not . Latency Reduction at the Core: BIOS Tuning Guide
Arturia_Software_Center__2_10_0_2970
Error code …
Older one used to install and run great with WINE but, now auto update takes over and crashes it.
PS.
Arturia, Please consider changing the auto update option.
Do you want to Update? YES or NO
Same thing with Windows apparently
Hello,
You can re-install the ASC from the newest version.
No problem for me with Xunbuntu 24.10.
Hi ! Back a few months later… 
So the situation has improved since Paul Davis’ Linux kernel patch ([PATCH AUTOSEL 6.14 14/20] ALSA: usb-audio: Fix duplicated name in MIDI substream names - Linux-stable-mirror - lists.linaro.org). The KeyLab (MK3) is automatically detected by the Arturia instruments and its built-in display works 100%.
Also, I put back an old USB audio interface on my PC and noticed I got a lower latency as I can select a rate higher than 48 KHz. For some reason I manage to keep the same number of buffers with no xruns at 96 KHz, so my latency is halved (and sound quality doubled).
ATM with no particular tweaks, I can use 64 buffers @ 96 KHz with some instruments, but some require 128 buffers not to get artifacts.
I still have to check if I get better performance with jack (instead of pipewire).