I use a second hand Lenovo M93P Tiny connected to my HD621, controlled by a Logitech K400 Plus Keyboard/mouse combo, for most of my streaming. The PC is in sleep mode so I can wake it with the keyboard without having to touch the system unit.
It all works well other than the irritation of multiple controllers and having to start everything in the right order (apparently) to get the handshaking to work properly sometimes.

Regards,
(Another) Duncan
Main: DSP6k, HD621, Oppo93, PS5, HP 800 G5 Mini, Hitachi 58HK6100U
Kitchen: M80+Echo Show 8"    Office: Echo V1
Bedroom: F80+Echo DotV3     Boxed: MS200 x2, DSP5K x 4