[SOLVED] Just moving the mouse increase temp, it's normal? lol. (5900x).

Solution
If the CPU boosts it will spike temp.

Ryzen CPU's boost eagerly even with very light loads (like mouse movement) in order to get it done quickly and put the core back into deep sleep for power saving.

Perfectly normal.
Actually no (that's why I've put "special" in quote). In my opinion it's just bad written mouse app that unnecessary eats too much processor's time. Reading mouse positions (and buttons) is very simple task and shouldn't even be noticeable by user.