Yes it is 40gbps I believe. Your G752VT is on the compatibility list for this eGPU setup and it touts 40gbps (Scroll to the bottom for the compatibility list). A lot of Asus laptops support TB3 @ 40gbps.
https://www.asus.com/us/Graphics-Cards-Accessories/ROG-XG-STATION-2/
(ROG has simply become too expensive compared to the competition with same specs... 😞 )
MSI GE75 Raider 10SGS - i7 10750H - RTX 2080 Super - 32GB Ram - 1TB WD NVMe - 2TB 960 EVO - 300Hz 17inch Display
RETIRED: ALIENWARE R17 R5 - i7 8750H - GTX 1070 @ 1.9Ghz - 16GB DDR4 - NVMe 970 EVO 1TB - SSD 960 EVO 1TB
SOLD: ASUS G703VI-XH74K, RETIRED: ASUS G752VY-DH72, RETIRED: ASUS G750JH DB71 , RETIRED:ASUS G74Sx DH72
