i'd say drop some settings a bit. 101/101 is pretty much the best you can do.
tweak it till your fps is between 80 and 100 on the most loaded map while fps is limited to 99; should be a good balance of speed and pretty

you want believe how easy it is to shoot ppl when your fps doesn't jump much...
ok, i checked my cfg, i was wrong there. you need to limit your fps to 99 to get full updaterate, not to set update to 101. sry 'bout it. been a while since i tweaked it. here's a cpl cfg settings that should get you by on 66 and 100 tick servers:
cl_interp 0.01
cl_interpolate 1
cl_lagcomp_errorcheck 1
cl_cmdrate 101
cl_updaterate 101
fps_max 99
if you use cl_interp 0 or a negative, it might take a lil time to get use to the difference.