After installing SR1, I have found no serious performance problems regarding render time. In fact, the size of the new files produced by P6 are about a fourth or fifth the size of it's counterpart P5 PZ3. I am now happily adding fully loaded Vickies rather than the stripped down versions I found necessary in P5. I am linking to the P5 library due to it's size ... 104 GB with 10,000 geometry files and 72,000 texture files. P5 used to take 15 minutes to boot up.

Gordon