I have an iMac Pro 10 core with 128gb RAM, how do I add ad as much of these resources to LR 5 pro. I have found LRTimelapse to be a really slow programme, perhaps it's me. It hangs a lot in the mapping.
Most of my time-lapse work runs into the 10 - 15000 RAW images per run. Any ideas would be welcome.

First of all, you should upgrade to LRTimelapse 5. LRT4 is out of support since years and is not optimized for new OS versions.

After that, performance should be much better on high potential computers.

Only on mac: if you still need to provide more memory to LRTimelapse, because you work with such large sequences, see: http://forum.lrtimelapse.com/Thread-mac-...rtimelapse
on how to do that.