Help with UACC Lag Spitfire CS Expression map

Hi Spitfire Gang

I have created an expression map for Spitfire’s Chamber Strings using UACC. I am using a Kontakt multi with some different articulation patches and they’re all set to lock UACC KS. The playing technique (eventually) triggers the correct articulation on the correct patch but it’s about a note behind, it’s the same thing in write mode as in when I audition them in the expression map menu, have to click it a couple of times before it’ll start triggering the correct patch.

System Specs:

|Edition|Windows 10 Pro|


|OS build|19044.2130|

|Experience|Windows Feature Experience Pack 120.2212.4180.0|

AMD Ryzen 9 3900x 12 core 3.79 GHz

128 GB of RAM

Samples and OS running off SSD’s

I have attached my dorico session, expression map and Kontakt multi.


  • johnrakemusic
    edited October 2022

    I have confirmed this issue still occurs with a single instance in the multi, just the vanilla "workhorse" patch. It also changes immediately when I click on the note in write mode.