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The serious sam second encounter HD doesn't seem right. I have 30.7 tf2 sensitivity and if I do the exact steps described here I get like 40ish in SSSEHD

Oh yes I should add I'm on 6/11, mark c fix applied, mousesmoothing disabled via console, I can't really feel any mouse accel being present (and I'm very sensitive to these things). Perhaps a revision of your formula is in order? Or what am I missing. Thanks for the great work tho!

I think there's a bug in the Serious Engine 3 that seems to occur at random times. I had the same issue as you, but when I set the sensitivity to 1 with inp_fMouseSensitivity=1 and then back to inp_fMouseSensitivit=0.433331 (which I guess it what you are using), it was correct. Try that and see if it works

Nope, still same as before, roughly 45cm/360 instead of 30.7... I set it to 1 via both menu (rough guess) and back to 0.108023 and via console... still the same low sensitivity

Strange, let me see if I can reproduce the bug I had and maybe figure out what causes it. When I try your settings I'm getting the correct distance now (about 30cm), but when I started up the game earlier I got closer to your 45cm the first time.

I found the solution... it appears to only work with 125hz polling rate... anything higher will cause lower resolution strange

Weird, I have to look more into this! Thanks btw

Do you know if there is a mouse_pitch and mouse_yaw in serious sam (first and second enc., HD remake)?

Serious Sam HD remakes's sensitivity seems off. I used the equation

S (cm/360) = 360* / (m_yaw*wps*(dpi/2.54)*in_game value).

I used the in_game value=2.15915 and dpi=3500 and it got me 0.2227221597 as opposed to 0.276431 I get on this site.