cs 1.6 is not running in OPENGL mode in my PC. when i run it in OPENGL mode the in-game fps fluctuating between 30 to 99 fps. its unplayable.
i upgraded my graphics card driver to latest but it did not work either. in D3D mode its works fine like 100fps constantly. i use to play with 640*480 resolution,32bit color,screen refresh rate=75 Hz.
in earlier days cs 1.6 works fine in OPENGL mode. once i uninstall it and after re-installation the problem arises for the first time. i want to run it in OPENGL mode. HELP ME.

my system configuration is given below.

Operating System : Windows 7, Version 6.1.7600

Processor : AMD Phenom(tm) II X4 955 Processor(3.2 GHz)

Memory : 4.00 GB(Zion 1333 MHz)

Hard Drive : 931.51 GB,Western Digital(caviar green)

Video Card : AMD Radeon HD 6870(xfx)

Monitor : Benq G2420HD

maybe your drivers got update ? Newtest drivers may not work correctly with older games. I had fluctuations from 100 to 70-80 when windows uptated drivers to newtest and when I try on older i had const. 100fps