I made this guide because the updates made by Valve caused a lot of problems. Most of the problems that occured are fixable by the users themselves. This guide will cover all the new features of the updated CS 1.6 (íncluding some stuff for HL and CZ as well), along with explanations and fixes for the most common issues.
Table of contents
1. Introduction
2. New features, console commands and launch options.
2.1 Mouse
2.1.1 Rawinput
2.1.2 Mousethread
2.1.3 Mouse acceleration
2.1.4 Sensitivity
2.2 Graphics, Gui's and Performance
2.2.1 Nofbo, nomsaa and stretchaspect
2.2.2 Low video quality
2.2.3 D3D
2.2.4 Monitor refresh rate
2.2.4 Vsync
2.2.5 FPS
2.2.6 Minmodels
2.2.7 Performance
2.3 GUI's, allowing custom added content and HD models.
2.4 Netcode
2.5 Gameplay
2.5.1 Fastswitch
2.5.2 Filterstuffcmd
3. Most common issues
3.1 Content and installing issues
3.2 Beta issues
3.3 Most graphical issues
3.4 SDL2.DLL issue
3.5 WHITE SQUARES/ODD SPRITES/GREEN SQUARES
3.6 Screen flickering
3.7 Sound
3.8 Snapshot and Screenshot with -nofbo
3.9 Movement, aiming and FPS
4. Summary of new recommended new cvars and launch options:
5. Thanks
Source: https://steamcommunity.com/sharedfiles/filedetails/?id=131408794
