Can't SIM programs with spindle speed over 12500rpm

Hi,From few month program SIM (not on the CNC) are stucking before controled movement (not G0). By chance, I have fond that reducing spindle speed unlock the program.
I take a look a the HAL configuration and check some values with HalShow. Starting from spindle-speed-cmd to spindle-at-speed, There is a calculation error between sim_encoder_0.speed input pin and encoder_0.velocity output pin.

Attached a calc file with some values of tested values
Version info : LCNC 2.9.8 Run In Place SIM on LinuxMint 22.3 (6.8.0-117-generic

Yes
The ini file is from gmoccapy sim sample
Only adjusted machine size and speeds according to real cnc.

The BASE_PERIOD in the sim config is too low for that spindle speed so the sim_encoder component cannot calculate the speed correctly.
Setting a lower BASE_PERIOD in the gmoccapy.ini increases the possible maximum spindle speed
 

Very nice
Set BASE_PERIOD to 5000. spindle_at_speed works correctly.
Thanks for help !

Yes 50000