What is meant by "cache size" in the FS2K2 scenery library?What are the units? gigabytes, megabytes, kilobytes, etc?What cache size is best and how high can it be set?Does changing it "generally" make any difference in FS2K2 performance or frame rates?What is the purpose of checking "empty cache on exit?"Thanks for your thoughts and experiences!Airbus

Not sure about this, but I always presumed it cleared the files from memory. Maybe someone else has a better explantion.Hope this helps,

If you've done a full install, the Cache is to be ignored (as well as all the anecdotal fairy tales regarding improved fps by playing around with it).The "fairy tales" developed because users back in the days of FS2000 thought the cache was a memory cache. In fact, the cache is in FS for one reason--to act as a HD cache for installs which load scenery from CD, with the purpose of keeping freq. used CD scenery on the faster HD. Enabling it for scenery already loaded on the HD causes FS to waste cpu and I/O time by moving the scenery from its resident folder, to the cache folder, then reading it from there.Unless you've specifically selected "cache this scenery" when installing add-on scenery (and if you did, you should go back to the add-on scenery and disable the option), the cache folder will always be empty. The empty on exit option clears it when it is used in the manner I described above. As for the size, I just leave it at the default setting, since it goes unused.-John