vray 2.4 slow material editor loading bitmap?!

hi all

i download vray 2.4 for max 2014 and i notice is when material editor is turn on and all the bitmap loading is take long time anf lag.

when i put on vray material bitmap even small one is take time to load him

in max 2013 and vray 2.3 is not take even secound is immadetlly load the bitmap.

there is afix for this? you know this problem?

thanks