Mouse look spaz-out

[System Shock]

Try

- Using WinEQ2 client (fixes many problems) its free

- Set the compatibility mode for the EQgame.exe in your P99 install location to windows XP service pack 2

- Set the fps limiter in display options to 60fps or less (NOT the option where you change your screens refresh rate in advanced options)

- If its a mouse with a lazer sensor check to see if a hair/piece of lint is lodged in front of it (even ultra fine strands of material will case the mouse movement to skip and behave strangely)

Not sure if these will help but it doesn't hurt try. I have done the first 3 above and the game runs near flawlessly for me aside from the out of pitch midi problems caused by remapping midi in win 10 with BassMIDI, VirtualMIDIsynth or OmniMIDI.