Hi, fairly new to SL here so I'm not sure if this is an easy fix (my mistake if so!)
I'm wearing a mesh avatar as well as some mesh clothing; every so often it will partly derender/the LOD will drop, or something. My graphics settings are fairly high because I have a good computer, my objects and avatars LOD's are set to max, and my avatar complexity max is set to about 250K so I'm a little confused as to why my ~60K avatar is having issues. Usually detaching and reattaching the object fixes it but it's a bit annoying to have to do that every so often.
Also, there doesn't seem to be an eventual load-in time, the items never render in unless I detach them and reattach them.
If this helps at all, computer specs:
Intel Core 17-6700K
16GB RAM
Gefore GTX 970
Running Second Life off an 256GB SSD.