Trouble with Tartarus Arrow keys.

Good day. I have a Razer Tartarus V2, a Naga Trinity and a Blackwidow Chroma. I would like to put the arrow keys of the Blackwidow on the control pad of the Tartarus. I want to use it to run in games and to hover the ship to the top right and left in Star Citizen. I changed the key assignment in the Synapse software and now I have the following problem. When I press the keys of the directional pad, either nothing happens for a short time or the key triggers permanently after a few seconds. The whole thing is like this in various games and I would like to know if this is a software or hardware problem. It would be great if someone could help me so that I know whether I have to exchange the Tartarus or set something in the software that can solve this problem. Thank you and stay healthy. Sunjy Kamikaze Translated with www.DeepL.com/Translator (free version)