[NAME] 1991  A USB-C device that supports both video output and USB 3.x data will cut video bandwidth in half in order to support USB 3.x, even if USB 3.x isn't actively in use.  (USB4 will be changing this.)  The XPS 17 9700 with a GTX GPU has all video outputs wired to the Intel GPU, and the Intel GPU in that system only supports DP 1.2/HBR2.  Half of an HBR2 link is not enough for 1080p 240 Hz.  Try a basic USB-C to DisplayPort cable, which will allow twice as much bandwidth as you're getting through your dongle.  That said, I'm not sure the Intel GPU supports 240 Hz at any resolution.  I've never looked into it.
Hi everyone,   1. Background I am using my XPS 17 9700 i7 1650ti for gaming. I just bought a Dell S2522HG monitor as an external monitor for my XPS 17, its 1080p and with a max refresh rate of 240hz. Here is the link to the monitor: [URL]   2. My setup: XPS 17 <=> OEM dongle came with the laptop (USB-C to USB-A v3.0 & HDMI v2.0 adapter ships standard)  <=> HDMI 2.0 cable (came with the monitor) <=> One of the HDMI port of the monitor.   3. Issue: Under the advanced display settings, the maximum refresh rate is 144hz instead of 240hz.   4. Things I tried: - I am using the external monitor only, the laptop screen is off; - I tried a different HDMI port to connect, still, 144hz is the maximum; - I updated all of my drivers through "dell update";   5. Help me (ToT) Does anyone have the same problem? Is an XPS 17 9700 i7 1650ti not powerful enough to push 1080p to 240hz? I am scratching my head right now, could someone give me a hint plz?   Cheers
XPS 17 9700 i7 1650ti does not support 1080p at 240hz?