I recently tried the TBT3-UDV Thunderbolt 3 Docking Station with an HP Spectre x360 15t-df000 laptop and an LG 34UC98 monitor and I’ve run into a performance problem. With the laptop plugged into the 60W Thunderbolt 3 port, the GPU and/or CPU performance dramatically decreases. The most confusing part is that I get better performance while running solely on the laptop battery than I do using Thunderbolt power. In terms of performance it’s turned out to be laptop power cord > laptop battery > Thunderbolt 3 power via docking station .
My troubleshooting steps:
- Set Windows 10 power performance to “Best Performance” in the notifications area of the taskbar.
- Tried two different Thunderbolt 3 cables.
- Tried directly connecting to the monitor via HDMI (was using DisplayPort from docking station to monitor while on Thunderbolt; both yielded same results).
- Tested the laptop alone on Thunderbolt power without external monitor.
Is there a setting I can change in Windows or the laptop’s BIOS that may fix this issue? Is the 60W port just not enough power, somehow less than the laptop’s battery?
OS: Windows 10 Home 64-bit
CPU: Intel i7-8750H
GPU: Intel UHD 630 and NVIDIA GTX 1050Ti with Max-Q Design