Full reinstall of client later, running in clean boot mode, all old files deleted or renamed, no plugins, no skins, virus scanner off...

Still doing the stop/hitch/slide forward every step I take in the areas around crafting facilities.
Still getting skills lagging / failing to fire, even when solo.
Still getting invald target when first engaging mobs regularly.
Still having mobs and I run past each other and then rubberbanding when moving into combat.
Etc, etc.

So, now having completed the full checklist of things we were asked to try earlier in the thread, anything else you want me to try Turbine peoples?

Will note that quite a few people in various places are saying about load times when opening vaults / supplier /vendor windows and saying this is getting slower - running lotro off a SSD here, and those things open in less than a blink of an eye for me whilst all the other problems continue, and have been this fast ever since I bought the SSD. Am VERY confident that my issues are not related to texture loading. On the other systems in the house running lotro off 7200 speed HDD's the delay on loading these windows can be a couple of seconds, but is clearly not the same as the other issues.