I started playing a game today and I noticed those horizontal lines when I move, I do believe they're called screen tearing.
I checked the game's options but there's no vsync.
I'm on KDE and going in the "About this system" I copied the following details:
Operating System: Solus 4.6
KDE Plasma Version: 6.2.3
KDE Frameworks Version: 6.8.0
Qt Version: 6.7.3
Kernel Version: 6.11.10-310.current (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 3600 6-Core Processor
Memory: 31,3 GiB of RAM
Graphics Processor: AMD Radeon RX 6600
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: B450 AORUS ELITE V2
System Version: -CF
I hope this is enough information. I didn't change much in the default system aside for installing some programs, aside for that the only setting I changed using superuser was reducing the grub countdown.