We experienced quite a drop in conversion amount and value when we migrated the Google ads tag to PPTM. As this is quite unusual we setup an experiment where we are tracking Google Ads conversion through 2 different tags.
There is 6:1 ratio where GTM tracks 6x more conversion amount and value.
What we have implement so far to rule out set up issues
No consent required as we are located in Switzerland, ignoring DNT
Moved PPTM to to rule out the issue
Implemented Google Ads Remarketing Tag
Implemented Google Conset V2 with default granted
Made sure priorities are set up correctly for PPTM
Did anybody experience the same issue. If yes, how were you able to solve it ? Somehow the other tags seems to be working fine.
We found the issue. Basically, it seems like even though the order is specified correctly (Remarketing Tag is loaded before Conversion), depending on latency and loading time the Remarketing TAG was not loaded before the Custom JS Conversion TAG.
There is also some hint in the documentation that tags might finish loading time at different points
We made sure that the function is loaded by adding it again on the conversion JS Tag. The deviation is now minimal to the implementation of Google Tag Manager.