Decrypting speed much different on my phone and my tablet

Bonjour,
Cryptomator’s vaults open rather quickly on my phone but it is very long on my tablet PC.
About 15 sec for 500 MB on the phone and 2 minutes on the tablet (same vault).
Here are the specs of the two devices. The main difference seems to be the RAM.
Does it explain the slowness on the tablet ?
Of course, I close all the other apps that can be closed when I use Cryptomator.

Wiko U feel lite:
16 Go ROM
2 Go RAM
MediaTek MT6735 quad core 1.3 GHz
Android 6

Time2 TC815A
16 GB ROM
1 GB RAM
MediaTek MT8163 quad core 1.3 GHz
Android 5.1
Thanks for any idea about that.