Predator Triton 500 SE 20% performance hit when using usb-c displayport vs hdmi?

theellimist

I've found a consistent framerate drop when playing games using an external usbc-displayport monitor vs the same monitor via hdmi. The issue seems to be persistent even when I change the resolution to very low. When I switch to using HDMI for the external display, then I experience the framerates I expect. The framerate on the built-in display is also great. My display supports 120+ hz but via HDMI I can only output 85 FPS max, with HDMI I can see the laptop can operate at 100+ FPS in warzeone for example, but framerate is 70 when running at the same settings via DP.

Has anyone seen this? I tried a few things such as disable HDR, game mode, hardware switching, but nothing has resolved the issue.

xapim

theellimist so youre using your display over thunderbolt ?? have u checked your external display thunderbolt supported specs also if it works fine via hdmi why are you using thunderbolt instead ? anyways just wondering what is your full model number as far as im aware the T500 SE doenst have DP port only usb-c thunderbolt and hdmi if im not mistaken

Interfaces/Ports

HDMI

Yes

Number of HDMI Outputs

1

Number of USB 3.2 Gen 2 Type-A Ports

2

Number of USB 3.2 Gen 2 Type-C Ports

2

Total Number of USB Ports

4

USB Type-C

Yes

USB Type-C Detail

USB Type-C port, supporting: USB 3.2 Gen 2 (up to 10 Gbps), DisplayPort over USB-C, Thunderbolt 4 (32GBPS), USB charging 5 V; 3 A, DC-in port 20 V; 65 W

Network (RJ-45)

Yes

Kusanagi

I have a Predator Triton 500 (PT515-51) and i have the very same problem.
My graphic performance is really bad over the usc c port (with dock). However, if i use only one monitor on the usb c dock the performance is back to normal, as soon as i use a second monitor, it drops badly.
Could not find the problem yet, did you have any luck?

Leostat

Check the nvidia control panel, it could be that the Thunderbolt port is connected to the intel GPU