downloading games on steam makes my mouse lagg

[Shamanji]

when i download a game on steam and my mouse laggs on desktop and in games, but the games runs fine.

Amd threadripper 3960x
Asrock Trx40 creator "Latest Bios"
Msi Gaming Z Slim Rtx 4090 24Gb
ASUS HYPER M.2 X16 GEN 5
Be Quiet Dark Power Pro 13 1600w
1x samsung 990 pro 2Tb "Windows 11 Pro"
2x Samsung 990 Pro 2TB
2x Samsung 980 pro 2Tb
1x Samsung 850 evo ssd 2Tb
6x Seagate 4Tb
1x Toshiba 18 Tb
Corsair K100 Rgb Keybord
Logitech G903 Lightspeed
Logitech powerplay mousepad
Samsung Odyssey Neo G7 32 Tommer Qled 240Hz 1440p

it only happens on steam not on any other webpage or platform.

any idea why this could happend?

[Shamanji]

anyone?