Im pretty sure your transmission requires toyota T-IV ATF, which is sold both by Toyota and Mobil Askari, In my experience in repairing these transmissions any OE ATF is blended to "compliment" the shift characteristics of the transmission. Meaning the mechanical and the fluid work as a team to provide the best performance (shift duration time, noise reduction, shift shock etc)
Your case is questionable as you have run CVTF in the box - no-one can say what damage has been done in the unit - and still you changed it to non-OE ATF. (face-palm suits you). You are a classic example of "neem hakeem khatra jaan".
When someone asks me for the benz NAG1 ATF, I speak of my experience which is that using Shell ATF3403M115 is the absolute best for it as it was purposely blended for it. Whenever I used it the performance was incredible. No noise, perfect aggression in shift, quick shift completion and proper temperature maintenance of the ATF.
It is very hard to find - MB say to use the NAG2 fluid which is far cheaper too and works OK - but change is required a bit earlier. There are other ATF that also work - but not 100% like the Shell ATF3403 did.