I have a weird issue with this meter. I leave it on all the time, hoping for some consistency. I usually measure a batch of around 15 resistors at a time. Let’s say that it has been a couple of hours since using the meter. The first couple of resistors in a batch display stable readings immediately. The one after that require several seconds to display a stable reading. For example, a 2400 ohm resistor might read 2406.45 as soon as it is connected with my Kelvin leads. Then it starts counting down and may reach 2406.37 before it stops. So why would the first couple in the batch be display a value that does not change.
Since I leave the meter on I would think that the temperatures have stabilized.
Bythe way, I usually measure Vishay/Dale RN55 or RN60 metal film, high quality ones.