don’t know about ati owners, but for nvidia users i’ve found disabling adaptive vsync has resolved low fps problems (which i have enabled by default in global settings).
add *\source sdk base 2007\hl2.exe to your games list and disable it.
Could you elaborate a bit more on the hardware and software configuration of your PC? What game settings had you been using when been getting lags? Had you had vsync turned on? If yes - was it turned on in-game or forced on using nVIDIA CP and/or some other third-party tools? Had you been using DXoverrider to force triple buffered vsync in BMS? What were lags - which you believe had been caused by the adaptive vsync - like to? Was it a gradual FPS drop below your vsync frequency (60Hz usually which means “graduate drop below 60 FPS”) or had you been having “instant drop” to 30/20FPS? I fyou don’t know how to measure FPS in Source games: use third-party tools like FRAPS or DXtory or open up the in-game console and type in:
disconnect
cl_showfps 2
sv_cheats 1
+showbudget
And then load up the save and head on to a place where you had been experiencing some lags. Take a screenshot there and post it here so devs could try to reproduce this problem on their rigs.
I’m a bit surprised really that you claim that adaptive vsync causes lags in BMS - it really shouldn’t as adaptive vsync technology should do quite the opposite remedying the problem with 60-30-60 vsync-related FPS stutters by turning off vsync (at expense of visuals - you would get tearing artefacts in return) whatsoever as soon as FPS drops below 60.