Windows 10 and applications along with system programs rely significantly on the GPU.
Windows 10 and applications along with system programs rely significantly on the GPU.
Users experiencing the same problem are discussing a persistent issue. Attempts to update drivers from the 391 series have not resolved it.
-Reported issues with 10 RTM 10240 drivers not installing... -Other versions of Windows 10 x64 (from 1511 to 17134) showed DWM problems using excessive GPU when YCbCr420 format was used. -Sora on the Nvidia forum mentioned it's a system bug. If you haven't checked MS support sites, you might find helpful help there. This isn't correct—some even claim high GPU usage is beneficial. Disappointing. Edited May 15, 2018 by canerpense
The MS answer forum isn't a reliable source of information. It often features unhelpful posts and repetitive steps that don't address the actual issue. It's mainly useful for identifying basic problems or simple OS questions, but it's not suitable for detailed troubleshooting. I tend to steer clear of such sites. I'm unsure how the mods are selected, but they clearly aren't company engineers. My Dell monitor seems to support this feature, though I haven't tested it yet. I plan to try it tonight with my GeForce GTX 680.
Holy fuss! I believe I discovered a fix. Recent cards definitely handle TMDS rates above 300mhz over HDMI. In fact, TMDS can reach around 600mhz! The 300mhz cap was the reason color depth data had to be encoded in YCbCr at 4:2:0 with 60Hz 2160p—so bandwidth didn’t get overwhelmed. I prepared a manual if you want, but what I did was update the EDID info (using CRU, which works with Windows and Nvidia drivers) to tell the TV or monitor it can support over 300mhz TMDS... After restarting the VGA drivers, it worked! But here’s the twist: I also enabled HDMI 2.0 support, which unlocked RGB too. It wasn’t the older HDMI 1.x 600mhz rate that mattered—it was the newer HDMI 2.0 standard allowing both high bandwidth and color features. On my desktop, 4K at 60Hz with 8bit RGB runs smoothly without stressing dwm.exe. So far I’ve only seen more VGA frame buffer usage, but I’m not sure what caused it.
0) Obtain assistance from MS since you have a 4K TV and a PC. 1) Download the CRU utility from this URL: https://www.monitortests.com/forum/Threa...tility-CRU 2) Move the files to any directory. 3) Launch CRU.exe and grant admin rights by selecting YES on SmartScreen. 4) Navigate to the "Extension Blocks" section, then click "Edit" (SS 1). 5) In the Data Blocks tab, choose "Add" (SS 2). 6) From the available options, pick HDMI 2.0 Support and confirm with OK. (SS 3) 7) Decide what to check at this stage; these are the relevant items for your TV. (SS 4) 8) Continue clicking OK until the program terminates. 9) Execute restart.exe (or restart64.exe if using 64-bit Windows [everyone does].) 10) Verify your Nvidia Control Panel and access the resolution settings under the tab.
CPU details: Intel Core i5-4670K (Haswell-DT, C0) running at 3400 MHz (34.00x100.0) and up to 4000 MHz (40.00x100.0). Motherboard: MSI Z87-G43 (MS-7816). Chipset: Intel Z87 (Lynx Point). RAM: 20480 MBytes @ 666 MHz, 9-9-9-24 graphics support. Graphics: MSI GTX 1060 Aero ITX OC/ARMOR OC NVIDIA GeForce GTX 1060 6GB, 6144 MB GDDR5 SDRAM. Monitor: 65" 4K 60Hz TV (Vestel 65UD8900). Driver: 397.64. Operating System: Microsoft Windows 10 Professional (x64), Build 17134.48 (1803/RS4)