M4 Max exporting slower in compressor than the M1 Max I upgraded from

So I produce weekly television videos for my church in Final Cut. 28:30 minutes long. Nothing crazy. 4k footage down to 1080p, adjustment layers a few lower thirds and titles. Then Embed CEA 608 captions. My M1 Max would export this in about 10-11 minutes in compressor depending on the graphics added. I've done two videos on the M4 Max and they both finish at about 40 minutes. What gives?? Both computers have 64gb of ram. The only difference is M1 had a 2tb ssd and the M4 has a 1tb ssd with a 40core gpu. Did I mess up a setting somewhere when swapping everything over? I'm stumped.