MPC X SE Loading and Saving Issues with SD Cards

I received a new MPC X SE about 3 days ago and quickly noticed that the loading and saving times are taking too long. I already own a regular MPC X that I’m planning to sell and I make some A/B test between the two machines. I test 3 different SD cards and a USB Flash drive. I reformatted all the drive with my Mac to using the ExFat format. The I put like 4-5 projects in those drives and load them in both machines and using the usb flash drive the MPC X SE was faster than the regular X. But when I try when the 3 SD cards the MPC X SE was way slower. Sometimes taking almost 5 minutes to load a project with 12 tracks( 7 MIDI ,5 Audio) but loading this same project using the USB flash drive it only took about 30 seconds. And loading those same projects on the regular X using the same drive only took about one minute. That’s why I’m thinking that the SD card slot is damaged. I reset preferences, I downgraded to 2.15.1 and the upgrade to 3.4.1 and then again to 3.4.3 and the issue persist. I almost 100% sure that the issue is the machine but I’m asking here of for some reason I’m missing something before send it back. Sorry for my English is not my native language . Thanks.