Probably just the valve operating that’s the issue, normal on all, you are going from closed to open initially, so it’ll feel slightly stiffer to move, whereas when you unweight and operate it you are depressing the lever and just lowering whilst the valve is fully open.
Routing is always a nightmare, the T130 was one of the worst, especially carbon ones, just check that there’s no issues with the routing, maybe even change the cable, it’s a simple two minute job, but you may find that it’s hard to operate this way due to some gunk being in either end causing issues on operating the actuator, the two ends are where you usually get crap build up, i just had to replace a cable on my dropper due to this, it’s only been in for a month or so but fixed the issue, and honestly for under 2 quid it’s not a fortune, plus it’ll keep the cable outer from any build up.