You see in this picture in the handbook at 44.1 kHz
A/D 0.27ms
D/A 0.63ms
All this happens in the FPGA (field programmable gate array) ... No audio signal goes through the TM software.
With the software you control the routing inside the routing matrix / hardware.
I cannot tell you by heart what the FPGA requires, it will be less that the chips required for AD DA.
If you need to know this, then RME needs to comment on this.
I think this has already been answered here in the forum, but I dont remember.
If I were you I would simply expect that its neglectable low compared to AD DA as I said.
BR Ramses - UFX III, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1680v4, Win10Pro22H2, Cub13