Strange bug involving Plasma 6, Wayland and NVIDIA

Evening all! Since I installed the 555 driver for my GTX 1660 Ti I have been having random black screens with two games (in this case Venture to the Vile and Alan Wake II).

In both cases, the game loads fine and the menus work, but as soon as the gameplay starts or there is a screen transition, the playing area will go black. You can still hear sounds and the game appears to be functioning, but nothing is visible. It is more common in Alan Wake II but does periodically occur in VttV. I then have to Alt-F4.

I have since reinstalled NVIDIA driver 550 and so far the games play normally. I couldn't see any obvious error output associated with these games, either. Any suggestions as to the cause is welcomed.

OS: openSUSE Tumbleweed x86_64 Kernel: 6.9.3-1-default Uptime: 4 hours, 37 mins Packages: 6965 (rpm) Shell: bash 5.2.26 Resolution: 1920x1200 DE: Plasma 6.0.5 WM: kwin Theme: Breeze Dark [Plasma], Breeze-Dark [GTK2], Breeze [GTK3] Icons: [Plasma], breeze-dark [GTK2/3] Terminal: terminology Terminal Font: DejaVu Sans Mono CPU: AMD Ryzen 9 5900X (24) @ 5.619GHz GPU: NVIDIA GeForce GTX 1660 Ti Memory: 11617MiB / 31995MiB

I can supply other data if required.