I'm not experiencing any rubber banding. Here are my net code settings, give them a shot:
cl_cmdrate "128" // def. 64 - Maximum Command Packets per second, sending to the Server. DO NOT SET THIS HIGHER THAN YOUR FPS!
cl_interp "0" // def. 0 - DO NOT CHANGE THIS OR A KITTY DIES!
cl_interp_ratio "1" // def. 2 - Ratio of interpolation Time. cl_interp_ratio : cl_updaterate = cl_interp -> lerp in ms
cl_forcepreload "1" // def. 0 - Force Data to preload into cache
cl_lagcompensation "1"
cl_predictweapons "1"
cl_resend "2" // def. 6 min. 1.5 max. 20 - Seconds before sending a new connection request to the server.
cl_resend_timeout "6" // def. 60 min. 1.5 max. 20000 - Total time allowed for the client to resend the 'connect' attempt
cl_timeout "30"
cl_updaterate "128" // def. 64 - Maximum number of Update Packets per second, received from the Server. Gets adjusted by the Servers TickRate if TR < cl_updaterate
net_maxroutable "1260"
rate "128000" // def. 60000; Maximum Download Bandwidth in byte per second. - DO NOT USE A LOWER VALUE. This should be your Internet Download Speed in Bytes. Do not use your max Download Speed if others use your network