External FX causes Audio Performance Peak and audio crackle

Cubase
1

Hi
When I insert an External FX I get very high performance Peaks witch result in audio clicks

Take a look at the Video (there are no sound in the video).
https://youtu.be/Ftnbsh5EsOo
From no Audio Performance Peaks to massive Peaks….
Its get less problematic audio wise if I increase the buffer, but I’m unable to use any lower buffer than 256 ,and the I have to accept clicks …
Any idea why this happens?

W10
Intel i7-6850K CPU @ 3.60GHz
32 Gb RAM

Cubase 12.052

All the latest updates
RME UFX+
FX send and return on analogue out/In 7/8

LatencyMon reports no problems (less than 250)

2

strange enough, i get the same issue when using Wesaudio’s device…

3

I guess the buffer size is just too small with that CPU and all your plugins to keep it from causing clicks. When you choose a realtime effect that’s something that is maybe not pre-calculated in the ASIOguard buffer so it no longer helps (which would be why that meter drops). Check the manual on ASIOguard?

4

Hi
The solution to this problem was, for me, to sell all 500 gear.
I have always been a ITB guy. I just had a short fling on analogue gear. To me it made my workflow complicated without any noticeable audio quality benefits.
But, analogue gear looks god…

And of course I checked everything including Asio Gard…