Huge Drop In Google Ads Traffic on Unbounce

1: What challenge are you currently trying to solve?
I recently moved to Unbounce because my old LP were very slow to load. Copied the LP exactly into Unbounce (used a contractor). Page is super fast in comparison. But then we noticed a huge drop in traffic coming from Google campaigns. After 2 weeks we switched back to the old page and traffic returned.
Anyone else had anything like this happen? Is there any issue between Google Ads and Unbounce?