Routing external chain effects on wavelab 11 creating feedback loop

WaveLab
1

hello everyone . i’m trying to setup my external gear for mastering. i watched video on WaveLab channel to setup external effects. but i don’t understand why i get audio feedback loop with a huge reverb effect when i apply the effect and instead of making my file fat, it makes its tiny. my setup is RME Fireface UC/ effects: Focusrite Isa TWO / dbx 1066/ mixer Mackie 1642-vlz3 . my problem is in the routing. the routing i use for doing mastering in Cubase 12 . does not create feedback. but WaveLab does. i don’t know if my explanation is clear.
routing order:
-RME main bus 1/2 to effects chain
-effects chain to mixer channel (with sub out3/4 botton)

been stuggling all day with it i don’t understand what is rwong

2

Are you using the same stereo path to send to some external FX and monitor?

Normally you might use output 3/4 to send to the external FX, then record back in on 1/2 or 3/4 and then monitor what you’re doing on output 1/2.

3

Are you using Totalmix? I’ll screenshot my TM setting, it’s different for WL.

j,

4

total
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As you can see, the chain input is zeroed, both to the main bus and the “chain in” bus. WL can still tap its input, but there’s no feedback.

j,