Blur Busters Forums

I've followed the recommended steps of turning on VRR, disabling in-game V-Sync in favor of the one in NVCP, then capping the frame rate 3FPS below the display refresh rate. When I play games that runs below the display refresh rate, however, I unfortunately still see constant judders. Nothing I've tried seems to work, I even reinstalled the graphics driver using DDU. What am I doing wrong? Is this simply caused by the 1/10% lows?

I should add that I'm on a laptop, using the included display. Everything is passed through the integrated graphics via optimus, because even though the laptop has a MUX switch, VRR just doesn't appear at all when I set the discrete GPU as the display driver. VRR only appears on MSHybrid mode. Adaptive sync is already turned on in Intel graphics control panel.

It's quite challenging to play with VRR on a built-in laptop screen sometimes.

So much easier is VRR on an external display, since it works fine with the discrete GPU mode, and I can use the discrete GPU a bit more easily with it. I more options suddenly appear in NVIDIA Control Panel when I connect my Razer Blade to an external VRR display, I do not think my laptop screen actually supports VRR so I never tried on its internal screen, but when it's connected to an external monitor over DP or USB-C/Thunderbolt (DP Alt).

(Side note -- I did have to hunt down newer drivers to get the thunderbolt working, since the best and most stable Thunderbolt 3 drivers was not at Razer's website. Ugh. Lovely that the Intel NUC Thunderbolt Drivers made my Razer Blade 15 USB-C Thunderbolt port massively more reliable (d'oh), I did have to do a fresh install of a bunch of drivers to make all the thunderbolt hotplug crashes disappear for the first-ever-time. Now I can hotplug 3440x1440 240Hz between my Razer and my MacBook with one cable for KVM+E! I also add a desktop gaming rig too in the thunderbolt one-cable hotplug mix. USB-C based 40Gbps+DPAlt with G-SYNC working fine!)

But it varies a lot between laptops how well VRR works and/or how opaque it's abstracted. I've seen units where VRR just works out of the box, and units where VRR was a nightmare to get working. Discrete GPUs that are routed through integrated GPUs are so much unfun to troubleshoot.

Some laptops I've given up, and some laptops manages to work fine (after a bit of driver roulette). I wish it was better advertised that the Intel NUC Thunderbolt 3 drivers was compatible with the Razer Blade 15 as a stability solution, with the caveat you need to uninstall your GPU driver first BEFORE you upgrade your Thunderbolt with the Thunderbolt drivers originally designed for an Intel NUC (compatible with same Intel chip in many Razer Blades) and reinstall generic NVIDIA drivers rather than Razer's semi-incompatible modified NVIDIA drivers. Possibly not the most power-efficient or Max-Q optimized, but at least it is stable. Fun, fun...

(For the performance I'm amping to upgrade the desktop system soon (in 2025), so I'm a bit outdated on the gaming laptop department still, but hey, at least it's stable now. I do need mobile 120Hz and 240Hz machines for things like TestUFO development, etc.)

What's the laptop model and operating system (Win 10 or 11)?