Mouse lag Big Sur
Using the mouse by simply scrubbing on the dock slows the entire system and apps open in the background. It persists through any app slowing any and everything down even wired or with the included dongle (Razer Mamba Wireless)
However if I use my trackpad the system is perfect without issue. There's some sort of compatibility/connection issue with peripherals on the whole. If any advisor reads this, any feedback on future fixes or updates would be appreciated, cheers.
If it persists too long I'd have no choice but to downgrade to Catalina as it was perfect initially there.
MacBook Pro 13″, macOS 11.0