- AMD Graphics Card Make & Model: ASUS Radeon RX 550 2GB GDDR5
- Desktop or Laptop System: Desktop
- Operating System: Windows 10 64bit version 20H2 (build 19042.685)
- Driver version installed: Adrenalin 2020 Edition 20.12.1, AMD Chipset Drivers 2.10.13.408
- Display Make and model and connection/adapter in use, resolution, and refresh rate: AOC Q27G2U 2560x1440 @144Hz DP
- CPU/APU Make and model number: Ryzen 5 3600
- Motherboard Make & Model + Bios Revision: ASUS ROG Strix B450-I Gaming, BIOS 3103
- Power Supply Unit Make & Model + Wattage: Cooler Master V550 Modular 550W
- System Memory Make & Model + Frequency: G.Skill Ripjaws V 16GB DDR4 16GVK Kit F4-3600C16D-16GVK 3600MHz
I've had this system for about 1.5 years, but with Radeon RX 5700 (reference) instead of Radeon RX 550. It worked OK, and then about 2 weeks ago I sold my Radeon RX 5700 and replaced it with the Radeon RX 550.
After installing Radeon RX 550 I noticed that sometimes mouse cursor lags / stutters / "skips frames" when I move it. I thought that maybe I need to reinstall drivers, but that didn't help, and I ended up completely reinstalling Windows, which didn't help either.
I'm emphasizing this again: I had a system that worked OK, I replaced graphics card to Radeon RX 550, everything else is the same - same PC components, same peripherals, same cables connected to the same slots, same desk, same chair, everything connected to the same power socket, etc.
The issue with lagging mouse cursor is sporadic, it does NOT lag all the time. Sometimes it's OK, sometimes it's not.
I've also noticed that if I create some GPU load, e.g. run FurMark stress test, or even play video in a player that uses GPU for decoding / rendering, then GPU and GPU memory clocks rise (from 214 MHz to 1183 MHz and from 300 MHz to 1750 MHz respectively), PCIe bus interface also speeds up from x8 1.1 to x8 3.0 (according to GPU-Z) and the lag is gone. This is actually the workaround I've been using for the last 2 weeks to "fix" the issue: every time I boot my PC I start playing a movie in a loop, mute it, minimize the player window, and with the movie playing in background I can work normally without mouse lagging.
There is no other issues with my PC, everything works OK: audio and video playback (both in browser and in desktop player), typing on the keyboard, playing games, running stress tests - everything is OK, even without the "movie workaround". I've also tried to run Ubuntu 20.10 in live mode from USB, at there was NO issue with the mouse cursor lagging, so I guess that proves it's not a hardware issue.
I think it's some PCIe power saving issue in the graphics driver. I've tried settings PCIe ASPM in Windows power plan to OFF, and I think it reduces the frequency the lagging occurs, but I'm not 100% sure because, as I said, the lagging is inconsistent. In any case, even setting it to OFF doesn't fix the issue completely.
So the question is: what can I do to resolve the issue, or am I stuck with my "movie workaround" until I buy a new graphics card?
