Strange behavior with over sampling in Eight Voice

[groumpf]

Hi,

I setup a simple sound (starting from new but with a single osc) saw with res at max and cutoff at 2/3 and when I set the over sampling to 1 the sound is OK, but when I set it to x2 or x3 or x4, the cutoff is like opened at max and sometimes it go back to its normal value when playing a slow arpeggio. There is no cutoff modulation.
Seems like the over sampling is adding a sort of drift on filter but actually the right cutoff value is not frequent in my test.
The Reaper FX over sampling parameter doesn't produce this behavior.

Someone has the same problem ?

Version 1.2.0 build 107 windows11/ Reaper 6.65/Focuswrite