A Ti build should run fine at up to .3 ohms on those mods. Could be a problem with the firmware on them. I can't remember if it is updateable on those like it is on the IPV4s but if it is you could try reinstalling the latest update and see if that helps.
What i do not understand is that i have the same problems on both IPV3Li and IPVD2. And i have also reinstalled the firmware on my IPV3Li to similar results.
I am really thinking its the wire now. The Ti i got is very dirty and needs a lot of cleaning. Even after cleaning, some portions still remain dark/blackish whilst some portions are shiny. Shiny is what we want isn't it?