I'm having this problems only in cakewalk, in studio one and fl studio doesn't happen

When i open a project with redwirez mixIR2 in the tracks an some loaded impulses the plugin doesn't sound right until i open the window of the plugin (is annoying having to click in several windows for getting the sound fine)

If i use mixIR 3 instead, the previous problem disappear but if i save FX chains containing mixIR3, when i reload that chains in other project mixIR3 sounds like totally bypassed no matter what and there's no way to get it sounding right