Weird "Delay" in Effects Channel (EW Spaces)

I created a few effects return channels for an orchestra score. It’s part of my orchestral template and I loaded EW Spaces II in there for various instruments. Sometimes I can hear a weird “delay” when playing an instrument live. As soon as I go into the effects return channel and activate/deactivate the spaces plugin, the delay is gone. It is really faint and almost not noticeable, but it’s there. This happens to any return effect I made.

Is this an issue with Nuendo? Because before I stepped over to Nuendo from Cubase 13, I did not hear these weird delay sounds.

My theory is that it could just have to do with the audio buffer. Because as soon as I make adjustments to the effect, the delay is gone.

Does anyone have similar issues?

Are you saying this only happens with Spaces II, or with any effect? I have been having an issue with SPACES II in 13 where there is a second delay happening as if I have a slapback echo set. Occasionally, it goes away.

YES, some kind of slapback! Not sure if it is Spaces, I haven’t tested it thorougly yet

Can you make a new track with a different Reverb and do a test? If it is only Spaces we can both report it to EW.