Using the 'Null runtime' trick is the easiest way to speed up P5 startup. Poser reads the runtime folder at startup, to have all the library thumbnails ready. By using the null runtime, and not installing -anything- into it, Poser reads empty folders and moves on (you don't even need to create the folder structure in runtime; Poser will do that for you. Just create the null runtime folder, and link it in). You get a cold startup time of between 15 and 30 seconds then, depending on your hardware and available memory. Once it's going, you switch to your chosen runtime, and Poser will only read a library when you select it. You still have to suffer that time, but doing it this way means you aren't trying to initialize the program at the same time. The other trick is to install nothing into the actual P5 runtime. The only thing you need in there are the folders involving morph injection; they have to be in the native runtime where the executable is. Open your runtime folder, and at the top of the tree may be folders like !DAZ, !DNA, !AEON, etc. This is the naming convention for the morph injection folders. Just copy them into the P5 runtime, and get into the habit of recopying them when there's an update to any of the related figures. You also don't need to have P5 specific content placed in the P5 runtime. Dynamic cloth and hair work just fine in an external runtime, so you could copy the content out of P5 into P4's runtime, if you have both, and have the P5 characters to use in P4 (no dynamics, though). And your runtime is 3.8 gigs? Trust me, that's no more than an adolescent compared to many. Mine is pushing 25 gigs, and I know don't have the largest by far. =Now= is the time to work out your management system, trust me on this. Or one day you will find yourself trying to tame Leviathan. Well, you will anyway, but at least you would have made the effort.... ;P